A pendulum consists of a 3.3 kg stone swinging on a 3.9 m string of negligible m

Question

A pendulum consists of a 3.3 kg stone swinging on a 3.9 m string of negligible mass. The stone has a speed of 7.7 m/s when it passes its lowest point.

(a) What is the speed when the string is at 63 ? to the vertical?

(b) What is the greatest angle with the vertical that the string will reach during the stone's motion?

(c) If the potential energy of the pendulum-Earth system is taken to be zero at the stone's lowest point, what is the total mechanical energy of the system?

Help.. with detail.....

Explanation / Answer

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pendulum consists of a 3.4 kg stone swinging on a 3.7 m string of negligible mass. The stone has a speed of 8.2 m/s when it passes its lowest point. (a) What is the speed when the string is at 57

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