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(Solved): Problem 3. (20 points) A disk has mass M and radius R. The disk can rotate freely about a horizontal ...



Problem 3. (20 points) A disk has mass

M

and radius

R

. The disk can rotate freely about a horizontal bar. A mass

m

is wrapped around the disk and hangs below it, as shown below. Note that the moment of inertia for a solid disk is

I=(1)/(2)MR^(2)

. Part (a) Draw separate, qualitatively correct free body diagrams for the disk and the hanging mass. (6 points)



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