A stationary 3.0-m board of mass 5.5 kg is hinged at one end. A force F is appli

Question

A stationary 3.0-m board of mass 5.5 kg is hinged at one end. A force F is applied vertically at the other end, and the board makes a 30degree angle with the horizontal. A 65-kg block rests on the board 80 cm from the hinge as shown in the figure below. Find the magnitude of the force Find the force exerted by the hinge. Find the magnitude of the force as well as the force exerted by the hinge if is exerted, instead, at right angles to the board. Draw an extended free-body diagram showing the forces acting on the board. Because the board is in equilibrium, you can apply the condition for rotational equilibrium to it to find the magnitude of .

Explanation / Answer

b.493.9 N

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