Simple Machines. Activity 1. Simple Machines. Force – push or pull on an object Newton – international unit of force. Simple Machines. Work is accomplished when an object moves as a result of force acting upon it Joule – unit of measurement for work Work = force X distance.
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lever, wheel and axle, inclined plane,
pulley, wedge, and screw
L EFirst Class
F hinged door, wheelbarrow,
pry-up bottle opener
E LThird Class
F fishing rod, broom