A 0.1 kg ball on a 0.5 m string can withstand a tension of 20 N. The greatest speed at which it can be whirled in a horizontal circle (ignore gravity) is:

  1. 10 m/s
  2. 100 m/s
  3. 5 m/s
  4. 10 m/s
Answer

A) 10 m/s

T = mv^2r Rightarrow v = Trm = 20 0.50.1 = 10 m/s. SLO P-11-B-14 · Application

Physics MCQ · More Circular and Rotational Motion MCQs · Practise