Question

A body of mass 2 kg is revolving with angular speed 2pi radian/s in a circular path of radius 1 m. The centripetal force acting on body is

Answer 1

Answer:

Formula: centripetal force=Mw²r

where M is mass =2kg

w²is angular velocity squared =(2)²=4

r is radius=1m

Explanation:

CF=Mw²r

CF=2.4.1

CF=8

centripetal force acting on body is 8N

Answer 2

Given :

mass of the body (M) = 2kg

Angular speed (w) = 2pi radian/s

radius of the path = 1 m

To find :

Centripetal force acting on the body.

Solution :

Centripetal force acting on a body of mass M, radius r, and angular speed w,  is given by the formula Mw²r.

i.e. centripetal force (C.F.) = Mw²r

=> C.F. = 2 * (2)² * 1

=> C.F. = 2 * 4 * 1

=> C.F. = 8 N

Hence, the required centripetal force is 8 N.