For Questions 2) - 3), refer to the diagram shown, depicting a large 2.0 kg ball

Question

For Questions 2) - 3), refer to the diagram shown, depicting a large 2.0 kg ball attached to a firm steel post which spins uniformly with a frequency of 3.0 cycles per second in a circular path of radius r as shown 2) When in the position shown, which of the following best indicates the ball's velocity (v) and net force (F as viewed from above? F (D)(E) 3) If the circle's radius is 16.0 cm, which of the following best describes the magnitude of the centripetal force acting to hold the ball in a circular path? (A) 1.14 x 10 N (B) 114. N (C) 57.0 N (D) 1.40 N (E) 0.70 N

Explanation / Answer

2) velocity will be tangential and force will be towards the centre.

So option E is correct.

3) F = MR?² = 2×0.16×(3×2?)² = 113.69 N = 114 N

So option B is correct.

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