Tether ball problem (Forces)

  • Thread starter Charanjit
  • Start date
  • #1
48
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1. Homework Statement

A tether ball leans against the post to which it is attached. The string is attached to the ball such that a line along the string passes through the center of the ball. The string to which the ball is attached has length 1.50 m and the ball's radius is 0.108 m and has a mass of 0.275 kg . Neglect any friction between the ball and the pole.




2. Homework Equations

F=ma
A=v^2/r
F=mv^2/r




3. The Attempt at a Solution

Have a free body diagram, but have no clue where to start.
 

Answers and Replies

  • #2
338
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What is the question?
 
  • #3
48
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Woops, sorry.

First question: What is the tension in the rope?
Second: What is the force the pole exerts on the ball?
 
  • #4
338
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Start by labeling the forces on the free body diagram.
 
  • #5
48
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Ok I got the first question figured out, need help with the second one.
 
  • #6
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I had help and worked out the second part which asks what is the force that the pole exterts on the ball, and I got 0.194. But my online system doesn't accept, maybe its wrong. Can someone confirm?
 
  • #7
338
0
I had help and worked out the second part which asks what is the force that the pole exterts on the ball, and I got 0.194. But my online system doesn't accept, maybe its wrong. Can someone confirm?

Work it out here.
 
  • #8
48
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Nevermind, had my instructor explain it.
 

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