People often use simple machines like pulleys, levers, and ramps because they say the machine “makes the work easier.” Which of the following statements about simple machines is true? a.
Simple machines often reduce the amount of work to move an object.

b.
Simple machines often reduce the energy required to move an object.

c.
Simple machines often reduce the power consumed when moving an object.

d.
Simple machines often reduce the force needed to move an object.