Static Friction Video Lessons

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Problem: A 3.50 g coin is placed 11.0 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of μs = 0.890 and μk = 0.580.What is the maximum angular velocity with which the turntable can spin without the coin sliding?

FREE Expert Solution

Maximum static friction: 

fs=μsN

Newton's second law:

ΣF=ma

Centripetal acceleration:

ac=v2r=2

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Problem Details

A 3.50 g coin is placed 11.0 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of μs = 0.890 and μk = 0.580.

What is the maximum angular velocity with which the turntable can spin without the coin sliding?

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