Question

A particle starts moving in a circle of radius R from rest with constant angular acceleration "alpha". the magnitude of net acceleration at time t is?

Answer 1

α = (ω₂ - ω₁) / t
but, initial angular velocity is zero.
∴ α = ω₂/t = (s/R)/t , where s is the distance travelled in the circular path..
∴|α| = s / Rt

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