An object is moving on a circular path of a π radius meters at a constant speed of 4.0 m/S. The time required for one revolution is (in sec)

Question

Question

This question was previously asked in

ISRO URSC Technical Assistant Mechanical 24 March 2019 Official Paper

Answer 1

Concept:

We know,

Distance travel on the circular path in one revolution = perimeter of the circular path

S = π × Diameter of the path

S = π × D

where D is the diameter of the circular path

Calculation:

Given:

V = 4 m/sec, Radius = π meter

Hence Diameter (D) = 2π meter

So, S = π × D

S = π × 2 × π

S = 2π²

Hence time taken by the object in one revolution will be sec