What was the initial angular displacement of the pendulum

Reference no: EM13542873

A 0.2 kg ball is suspended from the ceiling with a massless string (L=2.3m). When released from rest the ball swings downward and whe the string is vertical the ball's kinetic energy is 0.6 J. What was the initial angular displacement of the pendulum?

Reference no: EM13542873

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