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2007-09-20 Lab 03 - Force and Motion

2007-09-20 Lab 03 - Force and Motion - Physics 295...

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Physics 295 Introductory Laboratory I Partners Section Date LAB 3: FORCE AND MOTION - A vulgar Mechanik can practice what he has been taught or seen done, but ifhe is in an error he knows not how tofind it out and correct it, and if you put him out of his road, he is at a stand; whereas he that is able to reason nimbly and judiciously about figure, force and motion, is never at rest til he gets over every rub. . Isaac Newton (1694) OBJECTIVES · To develop the concept of force in terms of how it is measured. · To learn how to use a force probe to measure force. · To understand the relationship between forces applied to an object and its motions. · To find a mathematical relationship between the force applied to an object and its acceleration. Physics Material: Definition(s) of force, and Newton's Laws of Motion. OVERVIEW In the previous labs, you have used a motion detector to display position-time, velocity- time and acceleration-time graphs of the motion of different objects. You were not concerned about how you got the objects to move, i.e. what forces (pushes or pulls) acted on the objects. 'From your experiences, you know that force and motion are related in some way. To start your bicycle moving, you must apply a force to the pedal. To start up your car, you must step on the gas pedal to get the engine to apply a force to the road through the tires. @1993-94P. Laws, D. Sokoloff, R. Thornton Supported by National ScienceFoundation and U.S.Department of Education (FIPSE) Note: Thesematerials have been fJ10difiedlocally for use in the U of L laboratories. Page 3-1
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Page 3-2 Real Time Physics: Active Learning Laboratory V1.40-8 / 9~ Butt exactly how is force related to the quantities you used in the previous unit to describe motion--positiont velocity and acceleration? In this unit you will pay attention to forces and how they affect motion. You will first develop an operational idea of a force as a push or a pull. You will learn how to measure forces. Then you will apply forces to a cartt and observe the nature of its resulting motion graphically with a motion detector. . INVESTIGATION 1: MEASURING FORCES In this investigation you will explore the concept of a constant force and the combination of forces in one dimension. You can use these concepts to learn how to measure forces with a force probe. You will need the following materials: · Logger Pro software · PHYS 295 Experiments folder · Force probe · Universal Laboratory Interface (ULI) · Five identical rubber bands. · Meter stick · Spring scale with a maximum reading of 5 or 10 N Activity 1-1: How Largeis-ci-Piill? If youpullona rubberbandattachedat oneendtyouknQwit willstretch. The moreyou pulltthemoreit stretches. Try it. 1. Attach one end of the rubber band to something on the table that cari'tmove. Also attach the meter stick to the table. Now stretch the rubber band so it is several centimeters longer than its.
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2007-09-20 Lab 03 - Force and Motion - Physics 295...

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