Question

1. A particle is moving in a circle of diameter 5 m. What is its displacement when it completes 1.5 ( one and a half ) revolution?

Answer 1

Answer:

Radius of the particle = d/2

= 5/2 m

= 2.5 m

Circumference of the particle*No. of Revolutions = Distance covered by it.

= (2*π*r) . 1.5 = Distance

= (2*3.14.2.5) . 1.5

= 23.55 m = Distance

But in case of displacement, actually, this circumference will be multiplied by 0.5 because when it covers one revolution, it actually returns to its initial position.

(2*3.14*2.5)*0.5 m

= 7.85 m

Hope this helps.