Question

In a uniform circular motion, the centripetal acceleration is

• A. Towards the centre of the circular path and perpendicular to the instantaneous velocity
• B. Away from the centre of the circular path and perpendicular to the instantaneous velocity
• C. A variable acceleration making $45^o$ with the instantaneous velocity
• D. A variable acceleration, parallel to the instantaneous velocity

Answer 1

Answer: (A)

In a uniform circular motion the centripetal acceleration always points towards the centre and velocity is the tangent to the circular path. Uniform circular motion is the motion in which the object will be moving along a circular path with equal distance covered in equal intervals of time.
In uniform circular motion, the centripetal acceleration is towards the centre of the circular path and perpendicular to the instantaneous velocity.