machine
a tool or devise that makes work easyer
work
what happens when a force moves something through a distance
effort force
a force that is applied when doing work
resistance force
a force that must be overcome when doing work
load
an object to be moved
mechanical advantage
a measure of how helpful a machine is
lever
a simple machine made of a bar or rod that ternes on a support
fulcrum
the support on witch a lever turnes
pully
a wheel with grooves in its rim through which a rope or chain can run
incline plane
a slanted surface used for raising objects to another level