It is known that a vertical force of 800 N is required to remove the nail at C from the board

Civil Engineering Jan 26, 2021

It is known that a vertical force of 800 N is required to remove the nail at C from the board. As the nail first starts moving, determine a) the moment about B of the force exerted on the nail, b) the magnitude of the force P which creates the same moment about B if alpha = 10 degrees, c) the smallest force P which creates the same moment about B.