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Physics Falling Stick: Torque and Acceleration

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A uniform stick of mass M and length l is suspended horizontally with end B on the edge of a table, and the other end, A is held by hand. Point A is suddenly released. At the instant after release:

a) What is the torque about B?
b) What is the angular acceleration about B?
c) What is the vertical acceleration of the center of mass?

Answer: 3g/4

d) From part c, find by inspection the veritcal force at B.

Answer: mg/4

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