A 3-strand chain and sprocket turns 650 rpm and has a service factor of 1.5. If 15 HP/strand chain is to be used, find the torque that the chain and sprocket can deliver. (Ans. 242.4 ft-lbs)

Gg

An inclined plane at an angle of 15o is used to lift a 250 kg sofa through a vertical height of 5 meters.  If the coefficient of kinetic friction is 0.12, what is the Mechanical Advantage, Ideal Mechanical Advantage, and efficiency of the plane?

A 68 kg credenza is being pushed to move it. Due to use of sliders on the right side "feet," the coefficient of static friction at those feet, labeled B, is .2 while the coefficient of static friction at the feet labeled A is .4. Assuming impending motion, find the minimum force needed to move the credenza. Draw a clear and complete FBD before setting up your equations. Make sure your equations are clear before solving them! 0.8 m 0.7 m 0.6 m 0.6 m