Question

Acceleration of a body moving with constant speed in a circle is-

(a) zero
(b) rw

(c) w2
/r
(d) rw2
​

Answer 1

Answer:

This acceleration is called centripetal acceleration.

Answer 2

D

A body having a constant speed in a circular path experiences an acceleration directed towards the center of the circular path.

This is called the centripetal acceleration provided by the centripetal force.   Centripetal acceleration= ω²r

  This force might be provided by gravity, electrostatic attraction, the tension is a string, etc.    

  This acceleration doesn't have any role in changing kinetic energy.