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Lab report 8

# Lab report 8 - Purpose The purpose of this activity was to...

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Purpose The purpose of this activity was to measure the centripetal force on a swinging pendulum and then compared the force that was measured to the calculated force using the speed of the pendulum as well as the radius. An additional purpose of this activity is to measure the angular position and the velocity of a rotating body that is under a constant angular acceleration. Theory A. Centripetal forces keep objects moving in a circular path. For pendulums, the centripetal force changes as the pendulum swings back and forth and is dependent on mass, speed, and radius of motion. Using the equation, Fc=mv^2/r=mrώ^2 we can calculate the centripetal force acting on a pendulum. B. For every quantity of displacement, velocity, mass, etc. there is an equivalent quantity in rotational kinematics and all linear quantities have rotational counterparts. The kinematic equations for constant angular acceleration are used to solve problems of rotational motion- Ω=1/2(ώ0+ώ)t Procedure A.

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Lab report 8 - Purpose The purpose of this activity was to...

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