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December 10, 2016

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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