A 0.5 kg stone on a 1 m string moves in a vertical circle at 4 m/s. The tension at the lowest point is (g = 9.8):

  1. 4.9 N
  2. 3.1 N
  3. 8 N
  4. 12.9 N
Answer

D) 12.9 N

At the bottom: T - mg = mv^2r Rightarrow T = 8 + 4.9 = 12.9 N. SLO P-11-B-15 · Application

Physics MCQ · More Circular and Rotational Motion MCQs · Practise