Physics : Kinematics : Circular Motion

Solved Example Problems for Circular Motion

A particle moves in a circle of radius 10 m. Its linear speed is given by *v* = 3*t* where t is in second and v is in m s-1.

a) Find the centripetal and tangential acceleration at t = 2 s.

b) Calculate the angle between the resultant acceleration and the radius vector.

The linear speed at t = 2 s

The centripetal acceleration at t = 2 s is

The angle between the radius vector with resultant acceleration is given by

A particle is in circular motion with an acceleration *α* = 0.2 *rad s*−2.

a) What is the angular displacement made by the particle after 5 s?

b) What is the angular velocity at t = 5 s?. Assume the initial angular velocity is zero.

Since the initial angular velocity is zero (*ω*0 = 0).

The angular displacement made by the particle is given by

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11th Physics : Kinematics : Solved Example Problems for Circular Motion |

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