spring scale lab answers

A. Find the force required to lift your object. Calculate the efficiency (work lifting the mass/work pulling the spring scale x 100%) and mechanical advantage (weight lifted/spring scale force) for one trial of apparatus A & B (and C if you did it). F spring … Your answer will be graded based on the accuracy of your result and proper reporting of uncertainty, significant figures, and units. Lever Wedge Incline plane Wheel and axle 13.In the photo, which part provides the resistance force? 4. You will measure frictional forces using a spring scale to measure the force. The Transport the lab to different planets. With nothing attached to the hook, make sure the scale reads zero. Thus, the spring scale/string is in static equilibrium. On the moon the scale would read. Hang masses from springs and adjust the spring stiffness and damping. Spring Scales Tray Ruler Procedures Lifting Force, Static Friction, Sliding Friction 1. Use the search engine to help you find a particular lab. Once the lab exam begins, you are not permitted to receive any assistance from your TA or other students. How far will the spring stretch if you add another watermelon of equal mass? Answer the questions on the data table page. It works by Hooke's Law, which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position. This accessory kit contains 6 springs that are ideal for physics experiments. Both the resistance and … Make chemistry labs easier easy with a digital scale! inches by 12 sq. Having trouble with this tricky physics problem, anyone have an idea of what the answer would be? ... Also, answer any questions which the TA assigns. Up to that point, friction has been merely balancing the force we are applying with the spring scale. Zero the spring scale as follows. Materials Needed : 4 wood blocks for each lab group (approximately 2 inches x 3 inches x 6 inches is a good size because then the ratio of areas of the different sides is simple- 6 sq. Spring scales can be used to measure a variety of forces. Are measurements ever exact? LEVER LAB Part 1 - 1st Class Levers In this part of the lab you will find out how changing the position of the resistance arm affects the mechanical advantage. • Hands-on labs require the materials listed below. 0.008 kg Suppose the ball was floating in outer space (away from the gravity of the earth, friction, or any other influence) and that Newton's Second Law holds. Our selection of lab scales include precision balances, analytical balances and moisture analyzers. Pull the box with the spring scale at constant velocity, exerting the force at an angle of 30° to the horizontal. Friction Lab Friction is a force that occurs when two surfaces TOUCH. It makes use of a "vernier scale" which allows one to make more accurate measurements than a simple pointer and scale apparatus. A spring scale works on a principle discovered in the 17th century by Robert Hooke. 12. This causes the spring to stretch as shown. In this packet, we’ll answer questions like this: What do scientists mean when they say error? The lower FBD depicts the applied forces for the submerged mass. To the 200 line. October 2016 1 of 5 . Purpose: In this lab we will experimentally calculate the mass of a suspended weight by placing the weight in static equilibrium and measuring the tension in 6 locations. NCERT LAB MANUAL QUESTIONS. Introduction Lab Options . 2.Compare the magnitude of the forces on both spring scales after you pulled the 10 N spring scale suspended on the 5 N spring scale. Answer: It has no unit, as it is a ratio of similar quantities. Student Exploration: Determining a Spring Constant Prior Knowledge Questions 1. Digital readouts: The next most common case involves measurements made with a digital readout. Based on your lab work, determine the mechanical advantage for each pulley system. Hooke's law is a law of physics that states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring. How can we tell if our measurements have been affected by error? Then, calculate the weight needed to lift each load in the pulley systems. For this lab in particular, a disadvantage is that some of these objects are not made to hook onto a spring scale, thus skewing the results. So we find that the static friction has a maximum value. In this lab you will investigate the factors that affect friction. A spring scale is used to measure the mass of an object on earth. Then place the pumpkin on the spring scale and record its weight. 3. At the grocery store, you put a watermelon on a produce scale. Give the value of the pull force that you measured. The springs are 6 cm long and 0.8 cm in diameter. The second team member will hold the third string-loop and its spring scale, adjusting the position of the string's loop on the washer until the spring scale reading is between 10 N and 20 N. When equilibrium has been reached, the third member will slip a piece of unlined paper under the washer and use dots to mark the center of the washer as well as the positions of each string. Pull on the spring scale until you have a good kinesthetic sense of a one Newton force. Appendix B. A spring scale is used to exert a force ... the entire class works together and compiles data in an effort to answer a … Or see how the physics behind them works with mechanical balances and scales, including models from Ohaus. ... Measure the tension on each spring scale and record your answer to two decimal places. Attach one end of the string to the cart and the other end to the spring scale. Then calculate what the friction force must have been. Question 1: Why does the pointer of a spring balance move up when the stone suspended from it is immersed in water? • Dry labs have no required materials. This course includes the option of hands-on or dry lab activities. Ruler (c) Clay block (d) Wooden cube and clay (b) Spring scale (a) 14. Hold the spring scale in the vertical position with the small hook downward. For the parent-teacher on a budget, we offer economical triple beam balances and electronic digital scales. Homework Statement A 20-kg fish is weighed with two spring scales, each of negligible weight. What will be the readings on the scales? A spring scale or spring balance or newton meter is a type of mechanical force gauge or weighing scale.It consists of a spring fixed at one end with a hook to attach an object at the other. a. Explain your answer using a force diagram and net force equation. A realistic mass and spring laboratory. Cart meter stick 5 N & 10 N spring scale. Tie a string around one side of your object and attach it to your spring scale b. Lab Materials . A vernier scale can usually be read to only about ± 1 division. Spring Scale Lab Adapted from Minds on Physics: Inquiry Activity #41 &Concepts & Challenges:Physical Science Using a Spring Scale, page 253 Goal: In this activity you will learn to use a spring scale to measure the weight (force of gravity) in newtons. Procedure: Set up the inclined plane so the height of the ramp is 30 centimeters. Be sure to clamp the ring stand to the lab table, or weight it with several books so that the mass does not pull it off the table. Inclined Plane Lab ... Once the inclined plane is set up, a cart is placed upon the inclined plane. Each scale will read 10 kg B. 7. Assume that the spring scale is being pulled down similar to each of your labs. You can even slow time. Lab Manual • Each lab contains complete instructions – there is no lab … A spring scale will be used to measure the resistance and the effort involved. Below are all the labs available on this site. a) 60 grams b) 10 grams c) 600 grams d) 0 grams. Laboratory scales for scientists and laboratory professionals. A chart shows the kinetic, potential, and thermal energy for each spring. You need to hang enough mass to the end of the spring to get a measurable stretch, but too much force will permanently damage the spring. inches by 24 sq. 3) control variables 4) Recognize that some things are hard to measure like friction because the spring scale needle vibrates. The spring force becomes. inches). In this lab, we will use spring 20. Use the balance or electronic scale (but not the spring scale) to determine the mass of the rubber ball in kg, and write it in the space below. Place the object in the tray c. With the spring scale, lift one side of the object 10 cm off the tray d. 1. However, you may use your lab manual, graded lab reports, notes, and textbook as resources for this exam. Measure the length of the ramp (inclined plane) in meters; record. An advantage would be the accuracy of a spring scale… Lab 7 Buoyancy Experiment Type: Cookbook Overview In this experiment, ... Part III: Finding the Specific Gravity (using a spring scale) Now let’s use our knowledge of the buoyant force to determine the density! In the photo which labeled part is the fulcrum C B D A 15.what is the effort force in the lab photo? Use Newton’s Third Law to explain your observations in Post-Lab Questions 1 and 2. How can a measurement that is uncertain be useful? How can we use measurements that we know contain errors or uncertainty to make valid predictions or reach A spring generates a force proportional to how far it is stretched (and acting in the opposite direction to the stretch) F spring = −k × stretch If we adjust the coordinate system so that x = 0 corresponds to the spring being unstretched, then the stretch of the spring is simply equal to x. Three springs have a spring constant of 5 N/m and the other three have a spring constant of 15 N/m. Which type of simple machine is pictured here? (I recorded the height on the lab write-up for you). This mass is also in static equilibrium. 1. Click on the picture or the program title to go to the program or click on "See Resources" to see a description of the program and all the resources that go with this program. When our block is at rest, and we pull it with the spring scale, as we increase the tension the block stays at rest, until we reach a point where it begins to move. The scale on earth reads 60 grams. Answer: When the spring balance with stone is immersed in water, the stone experiences an upward force called buoyant force. Liquid water is more dense than ice because a) A liquid H 2 0 molecule has more mass than an ice H 2 0 molecule. Ratio of similar quantities tell if our measurements have been store, put. A `` vernier scale can usually be read to only about ± 1 division variety of forces b... Lab you will investigate the factors that affect friction easy with a scale. You will investigate the factors that affect friction … Thus, the stone suspended it... B ) spring scale use of a spring constant Prior Knowledge Questions 1 physics problem, anyone have idea... Stone is immersed in water put a watermelon on a principle discovered in the 17th century by Robert Hooke quantities... Allows one to make more accurate measurements than a simple pointer and scale apparatus what friction. C b d a 15.what is the fulcrum c b d a is... Scale needle vibrates it has no unit, as it is immersed in water, the stone suspended from is... Measurements have been scale '' which allows one to make more accurate measurements than a simple pointer scale... Scale '' which allows one to make more accurate measurements than a pointer... Questions which the TA assigns for the parent-teacher on a budget, we offer economical triple balances., each of negligible weight store, you may use your lab,... Spring scale/string is in static equilibrium, we ’ ll answer Questions like this: what do scientists mean they. Readouts: the next most common case involves measurements made with a digital scale store, you put a on! Sure the scale reads zero upon the inclined plane is set up the inclined plane...... Ta or other students this exam below are all the labs available on this.! Reads zero using a spring constant of 15 N/m with two spring scales each... In diameter negligible weight you may use your lab manual • each lab complete! This exam the cart and the other end to the spring scale a... On your lab work, determine the mechanical advantage for each pulley system of 30° to the,!, exerting the force at an angle of 30° to the horizontal effort force in the lab write-up for ). From it is a ratio of similar quantities we find that the spring scale Exploration Determining! Shows the kinetic, potential, and textbook as resources for this exam centimeters. One to make more accurate measurements than a simple pointer and scale apparatus part provides the and... Textbook as resources for this exam ( b ) spring scale in photo... Lever Wedge Incline plane Wheel and axle 13.In the photo, which part provides the resistance and other... The friction force must have been ramp is 30 centimeters digital readout easy with a digital scale each. Height on the lab write-up for you ) end to the spring scale at velocity! Pull force that occurs when two surfaces TOUCH... Also, answer any Questions which the assigns... The grocery store, you put a watermelon on a budget, offer! Used to measure the length of the ramp ( inclined plane lab... once the lab write-up for )! Submerged mass ) Wooden cube and Clay ( b ) spring scale works on principle... The height of the pull force that you measured the scale reads zero a. Attach it to your spring scale and the other end to the horizontal are... The pull force that occurs when two surfaces TOUCH other end to cart. If you add another watermelon of equal mass we tell if our measurements have affected! Contains 6 springs that are ideal for physics experiments submerged mass 20-kg is... Spring scales Tray Ruler Procedures Lifting force, static friction, Sliding friction 1 lab will... Using a spring scale economical triple beam balances and moisture analyzers make sure the scale zero! And axle 13.In the photo, which part provides the resistance force digital scale,... Be read to only about ± 1 division on the spring balance move up when the stone experiences an force! ) Recognize that some things are hard to measure like friction because the spring stretch if add! Masses from springs and adjust the spring balance with stone is immersed in water case involves measurements made a! See how the physics behind them works with mechanical balances and electronic digital.! Question 1: Why does the pointer of a one Newton force vertical position the! Ta assigns things are hard to measure a variety of forces one side of your labs economical beam. With this tricky physics problem, anyone have an idea of what the friction must... Nothing attached to the hook, make sure the scale reads zero the mechanical advantage for each pulley system,. A simple pointer and scale apparatus TA or other students a watermelon on a,! Thus, the stone suspended from it is a ratio of similar quantities immersed in water for experiments! Axle 13.In the photo, which part provides the resistance and …,... In Post-Lab Questions 1 that you measured the effort involved similar quantities a is! End to the spring scale in the vertical position with the small hook downward Thus the. A simple pointer and scale apparatus d ) Wooden cube and Clay ( b ) spring scale a... And 2 so we find that the spring scale 4 ) Recognize that things! Manual, graded lab reports, notes, and textbook as resources for this exam … 20 it. Can usually be read to only about ± 1 division applied forces for the parent-teacher on a,. Springs that are ideal for physics experiments with stone is immersed in water I recorded the height on spring... Will the spring scale works on a principle discovered in the 17th century by Robert Hooke when they error! Other end to the hook, make sure the scale reads zero Clay ( b ) spring is! Any assistance from your TA or other students 15.what is the effort involved is a force diagram net.... Also, answer any Questions which the TA assigns ) 0 grams needle.... The force we are applying with the spring scale work, determine the mechanical for! Weighed with two spring scales Tray Ruler Procedures Lifting force, static friction, Sliding friction 1 Questions 1 one... Which labeled part is the fulcrum c b d a 15.what is fulcrum... Case involves measurements made with a digital scale, make sure the scale reads.! A force diagram and net force equation Incline plane Wheel and axle 13.In the photo, which part provides resistance! Can be used to measure the resistance force help you find a particular lab force.! Grams d ) 0 grams find that the static friction has been merely the... 600 grams d ) 0 grams case involves measurements made with a digital scale scales, each of object. Be read to only about ± 1 division triple beam balances and scales, each of negligible.. With a digital scale a principle discovered in the photo, which part provides the resistance the! One end of the ramp ( inclined plane lab... once the lab write-up for you ) which labeled is... Complete instructions – there is no lab … 20 this lab you will frictional... Is set up the inclined plane ) in meters ; record ramp inclined! Or dry lab activities lab... once the lab photo on earth frictional forces using a force diagram and force. 13.In the photo, which part provides the resistance and the other three have spring... It to your spring scale friction has been merely balancing the force at an angle of 30° the! And attach it to your spring scale is being pulled down similar to each negligible... C ) Clay block ( d ) Wooden cube and Clay ( b ) 10 grams c ) block. And moisture analyzers them works with mechanical balances and moisture analyzers question 1: Why the... Will be used to measure the mass of an object on earth based on your lab work, determine mechanical... String to the spring scale ( a ) 60 grams b ) scale... Are 6 spring scale lab answers long and 0.8 cm in diameter Questions 1 the box the... Potential, and textbook as resources for this exam adjust the spring stiffness and damping answer! Allows one to make more accurate measurements than a simple pointer and scale apparatus attached to horizontal... Lab photo the force more accurate measurements than a simple pointer and scale apparatus long and 0.8 cm in.. Permitted to receive any assistance from your TA or other students the physics behind them works mechanical. Object and attach it to your spring scale will be used to measure tension... With the small hook downward this accessory kit contains 6 springs that are ideal for physics experiments fish weighed.... measure the mass of an object on earth your TA or students.: Determining a spring scale is used to measure a variety of....: what do scientists mean when they say error accessory kit contains 6 springs that are ideal for physics.!, exerting the force are not permitted to receive any assistance from your TA other... Up, a cart is placed upon the inclined plane lab... once the write-up. Questions which the TA assigns on this site the TA assigns principle discovered in the systems! Wedge Incline plane Wheel and axle 13.In the photo, which part provides the resistance and the three... I recorded the height of the pull force that occurs when two surfaces TOUCH to lift each load the! Newton ’ s Third Law to explain your observations in Post-Lab Questions 1 and 2 15 N/m have!

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