# Physics

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The figure below shows a thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle θ and released.

(a) What is the speed of the ball at the lowest point if L = 2.40 m, θ = 18.0°, and m = 500 kg?
m/s

• Physics -

Try using conservation of energy

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