JIPMER2019PhysicsWork, Power and Energy
A particle of mass 7 kg is executing circular motion with time period of 11 sec . Find out centripetal force, if radius of circle is 10 m .
Options
- A30 7 ~N
- B40 7 ~N
- C30 N
- D160 7 ~N
Correct answer
D. 160 7 ~N
Step-by-step solution
Given, Time period ( T )=11 sec , mass of particle ( m )=7 ~kg and radius ( r )=10 ~m Speed of particle, v= 2 r T = 2 22 7 10 11 = 40 7 ~m / s Centripetal force, F = mv ^2 r = 7 40 7 40 7 10 = 160 7 ~N