A catapult with a radial arm 3.83 m long accelerates a ball of mass 17.9 kg...
A catapult with a radial arm 3.83 m long accelerates a ball of mass 17.9 kg through a quarter circle. The ball leaves the apparatus at 46.8 m/s. The mass of the arm is 22.3 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
(c) Find the net torque exerted on the ball and arm.
___N · m
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A catapult with a radial arm 3.83 m long accelerates a ball of
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