Friction

# Friction - Morales Friction Purpose First to determine the...

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Morales Friction Purpose : First, to determine the coefficient of friction on an incline and horizontal plane. Second, to determine the horizontal acceleration using a tray and a falling weight attached to a pulley. Hypothesis : Cork should yield the highest average average coefficient of friction. Plastic should yield the least. And the greater the weight dragged across a plane by another weight on a pulley, the greater the resistance or friction. Materials : electric car, three different trays (cork, plastic, felt), string, meter stick, a metal plane with measuring tape, GLX (stopwatch) , force sensor, motion sensor, weights of different masses, weighing scale, data table Procedure : 1. INCLINED PLANE (constant velocity) Find a long, metal surface with measuring tape Place the tray on the surface. Life the surface to the point when the ray moves at constant velocity To find the angle, measure the vertical distance (opposite side) and the distance from ground level to the tray (hypotenuse) Then with Pythagorean theorm, find the adjacent side.

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## This note was uploaded on 01/19/2012 for the course SCHOLARS 1111 taught by Professor Mason during the Spring '11 term at GWU.

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Friction - Morales Friction Purpose First to determine the...

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