A particle starts from rest and moves on a circle of radius R with constant tangential acceleration a₀. Its radial acceleration after time t is:
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A particle starts from rest and moves on a circle of radius R with constant tangential acceleration a₀. Its radial acceleration after time t is:

G1 Physics · Accepted Answer

Since tangential acceleration is constant, starting from rest the speed after time t is v=a₀t. Radial acceleration is a_c=v²/R=(a₀²t²)/R.