The mechanism below is designed to keep the Load level while raising it. A pin on the rim of the 4 ft diameter pulley fits in a slot of am ABC. Arms
The mechanism below is designed to keep the Load level while raising it. A pin on the rim of the 4 ft diameter pulley fits in a slot of am ABC. Arms ABC and DE are each 4 ft long, Pin B is secured to the pulley edge and the package being lifted weighs 90 lb. The mechanism is raised by pulling on the rope that is wrapped around the pulley. Determine the force P applied to the rope and all the forces acting on the arm ABC when the package has been lifted 4 ft as shown: