Two mass (MA=2kg, MB=6kg) are connected by a massless cord wrapped around a hoop

Question

Two mass (MA=2kg, MB=6kg) are connected by a massless cord wrapped around a hoop-shaped pulley of mass M=45kg. Ihoop=MR^2.

?a) (5 pts) Assuming mass A is sitting just above the ground (no normal force), draw free body diagrams for two mass and the hoop. Indicate your coordinate system for each.

b) (5pts) Write out Newton?s Second Law (in rotational or translational form) for each of the three objects.

c) (10 pts) If the system is released from rest, what will the acceleration of the masses be?

a =____________

d) (5pts) If mass B starts h=5m above the ground, how long will it take mass B to hit the ground?

t =____________

Explanation / Answer

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