Forças em pinos P1 e P2

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PROBLEM 12.F9 
Four pins slide in four separate slots cut in a horizontal circular plate as 
shown. When the plate is at rest, each pin has a velocity directed as 
shown and of the same constant magnitude u. Each pin has a mass m and 
maintains the same velocity relative to the plate when the plate rotates 
about O with a constant counterclockwise angular velocity ω. Draw the 
FBDs and KDs to determine the forces on pins P1 and P2. 
 
SOLUTION