A mechanic lifts the front of a car with a jack. Find the mechanical advantage if a force of 30.0 lb on the jack handle lifts the car that weighs 960 lb
2 answers
M.A. = 960/30 = 32.
A direct drive winch with a handle radius of 12 in. and a drum radius of 3.0 in. is used to pull the end of a lever that is 8.0 ft long. The fulcrum is 6.0 ft from the end on which the winch is pulling. If a 240 lb load is attached to the short end of the lever, how much effort is required at the winch handle to lift the load?
3 answers