Question

A tension of 15 kg-wt breaks a string that is used to revolve a bob of mass 1.5 kg in a horizontal circle of radius 45 cm. Find the maximum speed with which the bob can be revolved and with what period? 

Answer 1

Calculation: 

 

 For the given bob: 

 i. the maximum speed is 6.64 m/s. 

 ii. the period of revolution is 0.43 s.