A pendulum consists of a stone with mass m swinging on a string of length L...

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Physics

A pendulum consists of a stone with mass m swinging on a stringof length L and negligible mass. The stone has a speed ofv0 when it passes its lowest point. (a) Write anexpression for the speed of the stone when the string is at someangle theta with the vertical. (b) What is the greatest angle withthe vertical that the string will reach during the stone's motion?(c) If the potential energy of the pendulum-Earth system is takento be zero at the stone's lowest point, what is the totalmechanical energy of the system? State all your answers in terms ofthe given variables and g.

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