# Principles of Mechanics 14

**Question description**

a) Calculate the angular velocity and angular acceleration of a 2kg mass rotating in a horizontal circle of 2m radius if one revolution takes 4 seconds?

b)A object rotates in a 3m diameter circle with angular velocity of 3rad/s. Calculate the period and the frequency of rotation for the object.

c) Calculate the centripetal force required to rotate a 3 kg mass in a 6m diameter circle at 60 revolutions per minute?

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