Question

A spherical body moves with a uniform angular velocity (ω) around a circular path of radius r. 

Which one of the following statements is correct? 

(a) The body has no acceleration 

(b) The body has a radial acceleration ω²r directed toward centre of path 

(c) The body has a radial acceleration 2/5ω²r directed away from the centre of the path 

(d) The body has an acceleration ω² tangential to its path

Answer 1

(b) A body moving with a uniform angular velocity ω on a circular path of radius r has radial acceleration equal ω²r directed towards the centre of the path.