lab 8 exp 1 [Compa E INSERT DESIGN PAGE LAYOUT REFERENCES MAILINGS REVIEW VIEW F
ID: 1435003 • Letter: L
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lab 8 exp 1 [Compa E INSERT DESIGN PAGE LAYOUT REFERENCES MAILINGS REVIEW VIEW Faxit PDF Experiment 1: Static Friction and Mass on an Inclined Plane In this experiment, you will use objects of different materials on an incline to calculate the coefficient of friction. Materials 1 Protractor 1 Ramp 1 Washer 1 Wooden Block Procedure 1. Lay the inclined plane (ramp) on flat surface like the floor or a table. 2. Place the small wooden block on the middle of the ramp. 3. Slowly start increasing the angle of the ramp. 4. As soon as the wooden block begins to slide, stop increasing the angle of the inclined plane 5. Carefully keep the inclined ramp at the same angle and use a protractor to measure the angle of the inclined plane. Record the angle in Table 1 6. Repeat Steps 1-6 four more times for the wooden block 7. Repeat Steps 1-6 five times for the metal washer, Record the angles in Table 2. Table 1: Wooden Block Incline Data Table 2: Metal Washer Incline Data Trial Angle Trial Angle © 2014 elcea Labs, LIC 254 WORDSExplanation / Answer
Coefficient of static friction of wood and metal are different, as the coefficient of static friction depends on the local surface roughness and how brilliantly the molecules exert force on the table (ramp) and vice versa. The coefficient of static friction can be found out by measuring the tan of the angle of the ramp as soon as the box starts sliding.
mgsin(theta) = mu*mgcos(theta)
tan(theta) = mu
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