Motion

Tanusri Gururaj, Academic content writer of Physics at Edumarz

• A body moves along a circular path such that the magnitude remains constant but the direction changes at a constant rate.

• The body undergoing uniform circular motion has uniform speed but, the velocity keeps changing.

• The body’s acceleration acts towards the center, and the velocity is tangential to the circle.

• Speed of body undergoing such motion:

v = distance/time

The distance covered by body = circumference of circle = 2πr

Let us assume that a body takes ‘t’ seconds to go once around the circular path, and the radius of the path is r.

Hence,

Speed = v = 2πr/t

• Examples of uniform circular motion-

1. The motion of the Earth around the Sun

2. The movement of the hands of any clock

3. A cyclist’s motion on a circular path