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You are watching: Is a catapult a simple machine

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Simple equipments make job-related easier.There are 6 kinds of straightforward machines: lever, pulley, screw, wedge, skinny plane, and wheel and also axle. You can combine an easy machines right into something more complex called a link machine; for example, a bike is consisted of of screws, levers, a pulley and a wheel and also axle. Build a simple device to beginning a water balloon!

Two similar gallon or half-gallon milk jugs, through handlesYardstick20-inch dowel rodTwo big rubber bandsPaper key or cupDuct tapeWater balloonsWater

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Fill the jugs with water, cap them and also put them on the soil or a table.Attach the yardstick perpendicular come the dowel using two rubber bands the make one X shape. Collection the dowel at the 8-inch mark. Rest each end of the dowel inside the jug handles.Tape a record bowl to the other finish of the yardstick.Hold the bowl end down and also load it with a small water balloon.To launch, simply push down on the other finish of the yardstick and also get out of the way!

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A catapult is a kind of simple maker called a lever. A bar is a bar focused on a turning point dubbed a fulcrum that"s used to progressive or move weights. Levers do it simpler to lift heavy things, choose a person or a seesaw. In the catapult, the bar (yardstick) pivots ~ above the fulcrum (dowel) in order come raise the bowl and toss the water balloon.