It is known that a vertical force of 200 lb is required to remove the nail at C from the board

Chemistry Jan 26, 2021

It is known that a vertical force of 200 lb 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 that creates the same moment about B iα = 10°, ( c) the smallest force P that creates the same moment about B.