Bathtubs, slides, roller coaster rails: simple machines that are really inclined planes
Explains the concepts of simple and complex machines, and describes inclined planes, including screws and wedges, and how they work.
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airplane amount of force angle Bathtubs Slides bottom build climb Coaster Kails comfortable Complex machines distance drain earth elevator farther feet floor foot high force of gravity force to push friction gained a mechanical GATEWAY Grade gravity pulls greater the stretch ground happen hard or impossible heavier heavy hill inclined plane lawn mower straight less effort less force lift the mower Lift the truck lifted it straight look machine allows mechanical advantage mile mountain road move an object muscle need to lift notice perform pound Prop push the mower push the truck RAILS raise the lawn ramp it takes Remember ride roll ROLLER COASTER rougher rubber band stretches scientists screw Simple Machines slant special type steep steeper string surface tall supports task things toy truck trade-off truck straight type of inclined wedge weight wheels