Estimate the net torque exerted on the ball and arm

Reference no: EM13556499

A catapult with a radial arm 4.15 m long accelerates a ball of mass 18.7 kg through a quarter circle. The ball leaves the apparatus at 49.7 m/s. The mass of the arm is 27.7 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: EM13556499

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