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Lab 3 Projectile Motion

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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This laboratory experiment presents the opportunity to study motion in two dimensions, projectile motion, which can be described as accelerated motion in the vertical direction and uniform motion in the horizontal direction. Equipment l 1 Computer set l 1 Photogate l 1 interface box l 1 launching ramp with SALT ® (screw-actuated linear translator) l 1 meter stick l 1 plumb bob with string l 1 steel ball Method The steel ball will be launched horizontally by being released at a certain height on the ramp. It will then fall to the floor and make a mark on the landing paper. The horizontal distance from take-off to landing, x , is proportional to the initial horizontal velocity, v 0 , of the ball. The distance, x , can be measured with the meter stick. By using the SALT ® , photogate and computer, the time can be measured, and the initial velocity v 0 can be calculated. Procedure 1. Measure the height h of the launch point (i.e. the height of the end of the ramp above the floor.) 2. Measure the "effective diameter" D eff of the ball. This may be accomplished by translating (moving in a

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