A coin rests 14.60 cm from the center of turntable. the, Ask an Expert

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Q. A coin rests 14.60 cm from the center of 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 the constant angular acceleration of 0.8400 rad/s2.

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

The static friction holds the coin to the turntable and the disc rotates because of the thing in the middle rotating. The coin has the same angular velocity as the disc.

(b) After what time will the coin starts to slip on the turntable?

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Category:- Physics
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