Tetherball

Tetherball is a game played by kids. The equipment consists of a volleyball on a string, with the other end of the string tied to the top of a post. Kids hit the ball back and forth around the post. Consider a volleyball of total mass 200 g attached to the top of a post by a 2 m long cord. The volleyball is traveling in a horizontal circle with a speed of 2 m/s. What is the angle \(\theta\) between the post and the cord in degrees?

Details and assumptions

  • The acceleration of gravity is \(-9.8~\mbox{m/s}^2\).
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