Question: A simple pendulum, which we will consider in detail in Chapter 15, consists of an object suspended by a string. The object is assumed to

A simple pendulum, which we will consider in detail in Chapter 15, 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 2.00 m long and makes an initial angle of 30.0° with the vertical, calculate the speed of the particle (a) At the lowest point in its trajectory and (b) When the angle is 15.0°.

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