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You are watching: Is a catapult a compound machine

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Simple machines make occupational easier.There are 6 kinds of an easy machines: lever, pulley, screw, wedge, lean plane, and also wheel and also axle. You have the right to combine straightforward machines right into something more complex called a link machine; for example, a cycle is consisted of of screws, levers, a pulley and a wheel and axle. Construct a simple device to beginning a water balloon!


Two similar gallon or half-gallon milk jugs, with handlesYardstick20-inch dowel rodTwo huge rubber bandsPaper bowl or cupDuct tapeWater balloonsWater


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Fill the jugs with water, lid them and put them on the soil or a table.Attach the yardstick perpendicular come the dowel using two rubber bands that make one X shape. Set the dowel at the 8-inch mark. Rest each end of the dowel within the jug handles.Tape a file bowl come the other end of the yardstick.Hold the bowl end down and load it with a little water balloon.To launch, simply push down on the other finish of the yardstick and get the end of the way!

This have the right to be hard to visualize! check this paper for some extr visual instructions.

What"s happening?

A catapult is a type of simple device called a lever. A lever is a bar centered on a turning point dubbed a fulcrum that"s supplied to advanced or move weights. Levers make it less complicated to lift heavy things, like a human being or a seesaw. In the catapult, the bar (yardstick) pivots ~ above the fulcrum (dowel) in order come raise the bowl and also toss the water balloon.