Basic Physics: Force and Friction
The 3.20kg, 38.0cm diameter disk in the figure is spinning at 350 rpm.
How much friction force must the brake apply to the rim to bring the disk to a halt in 2.40 seconds?
(Please see attachment for diagram.)
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Solution Summary
The solution is given succinctly, step-by-step. It uses simple calculations to find the friction force required.
$2.19