# A coin rests 15.0 cm from the center of a turntable. Thecoefficient of static friction between the coin and turntablesurface is 0.350. The turntable starts from rest at t = 0 androtates with a constant angular acceleration of 0.730 rad/s2.(a) Once the turntable starts to rotate, what force causes thecentripetal acceleration when the coin is stationary relativeto the turntable? Under what conditiondoes the coin begin to move relativeto the turntable?(b) After whatperiod of time will the coin start toslip on the turntable?

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A coin rests 15.0 cm from the center of a turntable. The
coefficient of static friction between the coin and turntable
surface is 0.350. The turntable starts from rest at t = 0 and
rotates with a constant angular acceleration of 0.730 rad/s2.

(a) Once the turntable starts to rotate, what force causes the
centripetal acceleration when the coin is stationary relative
to the turntable? Under what condition
does the coin begin to move relative
to the turntable?

(b) After what
period of time will the coin start to
slip on the turntable?

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Step 1

(a)If there is no friction between the surface of the turntable and the coin, the coin will go away from the center. To overcome this motion, the static frictional force must act towards the center of the turntable. When the coin begins...

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