Finding Friction Force on a Break Pad

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SUMMARY

The discussion focuses on calculating the friction force applied by a brake pad on a shaft to halt a rotating turntable. The turntable has a diameter of 30 cm and a mass of 1.6 kg, while the shaft has a diameter of 1.4 cm and a mass of 450 g, rotating at a constant speed of 33 rpm. The turntable comes to a stop in 15 seconds after the brake pad is engaged. The key to solving this problem involves applying principles of rotational dynamics and friction force calculations.

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  • Understanding of rotational dynamics
  • Knowledge of friction force equations
  • Familiarity with angular velocity calculations
  • Basic principles of kinematics
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A 30-cm-diameter, 1.6 kg solid turntable rotates on a 1.4-cm-diameter, 450 g shaft at a constant 33 rpm. When you hit the stop switch, a brake pad presses against the shaft and brings the turntable to a halt in 15 seconds.

How much friction force does the brake pad apply to the shaft?

I am struggling with answering this problem and I am not too sure how to approach it.
 
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Hi
This is a homework problem so please post it in the appropriate place. See the top of the Forum Page: "NO HOMEWORK Etc. Etc."
There is a standard way to present your question which involves showing what you have done so far.
 

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