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July 22, 2014

Homework Help: AP PHYSICS MECH.

Posted by vm on Thursday, January 6, 2011 at 7:24am.

A simple pendulum, consists of an object suspended by a string. The object is assumed to be a particle. The string, with its top end fixed, has negligible mass and does not stretch. In the absence of air friction, the system oscillates by swinging back and forth in a vertical plane. If the string is 2.35 m long and makes an initial angle of 27.5 with the vertical, calculate the speed of the particle at the following positions.

(a) at the lowest point in its trajectory
(b) when the angle is 15.0

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