Estimate the moment of inertia of the arm and ball

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Reference no: EM13547760

A catapult with a radial arm 4.02 m long accelerates a ball of mass 20.5 kg through a quarter circle. The ball leaves the apparatus at 42.6 m/s. The mass of the arm is 26.1 kg and the acceleration is constant. Hint: Use the time-independent rotational kinematics equation to find the angular acceleration, rather than the angular velocity equation.

(a) Find the angular acceleration.

rad/s2

(b) Find the moment of inertia of the arm and ball.

kg · m2

N · m

Reference no: EM13547760

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