Question :
A metal sphere of mass 0.1 kg is attached to an inextensible string of length 130 cm whose upper end is fixed to the rigid support. If the sphere is made to describe a horizontal circle of radius 50 cm, the time for its one revolution is near about
1. 1.2 sec
2. 3 sec
3. 1.5 sec
4. 2.2 sec
Answer :
4 - 2.2 sec
|