by decreasing the force needed to complete the task

by increasing the friction between the machine and the object

by adding more work on the object than originally applied

by removing the force of gravity on the object

wheel and axle

inclined plane

pulley

wedge

wheel.

fulcrum.

input force.

output force.

inclined plane

fulcrum

wedge

lever

inclined plane

fulcrum

force

lever

pulley

screw

wedge

lever