Alan will use a two wheel compound pulley to lift a crate from the floor of his garage to a
storage shelf. The shelf is 5 meters above the floor. Alans pulls 10 meters of rope to lift the
crate. Which statement is correct?
Alan uses one-half the force he would have needed without the compound pulley
Alan uses one-third the force he would have needed without the compound pulley
A two wheel compound pulleys will double the weight of the object Alan is lifting.
Alan has to use three times the force he would have used without the compound pulley