Laboratory Report 3.docx

# Laboratory Report 3.docx - Rashine Williams PHY-115-OL009...

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Rashine Williams PHY-115-OL009 Laboratory Report 3 INTRODUCTION In this experiment, we will measure friction on a horizontal surface. Friction is an important force, with positive and negative implications. Whenever two objects slide along each other, friction is involved. Friction is also present when two surfaces have no movement when resting against each other. DESCRIPTION We will be measuring two forces in this experiment. The first measurement will be the force it requires to move the objects from their resting position, this force is related to the coefficient of static friction. Then we will measure the force it requires to keep the objects moving, this force is related to the coefficient of dynamic friction. Because the wooden block provided in the lab kit is too light to produce accurate results, we will augment its mass by adding an object of constant weight, for this experiment a bottle of Limonata will be used. . The experimental setup can be seen in figure 1 below. Figure 1 – Experimental Setup

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Figure 2 Figure 3 We will then proceed to perform two types of measurements: Force of Static Friction (Fs): Starting from the block at rest, pull from the spring scale until the block starts moving. Record this force. Force of Kinetic Friction (Fk): Starting from the block at rest, pull from the spring scale until the block starts moving and continue pulling until it moves at a constant speed. Record this force. Question 1 What is the mass of the system made of the wooden block and the soda can (or the other object that you are using)?
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