Circular Motion

Question 1

Angular displacement

Answer 1

Angle though which an object turns, usually measured in radians.

Question 2

Angular velocity

Answer 2

Angular velocity is the rate of change of angular displacement of a radius joining the body to the centre of the circle.

Question 3

Centripetal acceleration

Answer 3

Acceleration which is always perpendicular to the velocity and always acts towards the centre of the circular motion.

Question 4

Frequency

Answer 4

Number of cycles per unit time.

Question 5

Period

Answer 5

Time taken for one complete revolution.

Question 6

Uniform circular motion

Answer 6

The motion of an object moving in a circular path at constant speed with constant angular velocity.

Question 7

Centripetal force

Answer 7

The force providing the centripetal acceleration to enable a body or particle to travel a long a circular path.
The resultant force acting on an object moving in circular motion directed to the centre of circular motion.