Bill Nye: The Science Guy

Season 1 Episode 10

Simple Machines

3
Aired Unknown Nov 12, 1993 on Disney Channel
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Simple Machines
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Learning about science can be hard work, but simple machines can make it easier. Let Bill Nye
push and pull you around ramps, levers, screws, and pulleys.
Simple machines simply make work easier by directing forces over distances. Instead of lifting a heavy
box upstairs, you can hook it to some ropes and pulleys and pull it up. Or you can get a ramp and slide
it upstairs. Either way, it's less sweat to use the pulleys or the ramp than it is to lift the box straight up
by yourself because the force you need is more spread out. Levers, ramps, screws, wheels, wedges, and
pulleys are all simple machines designed to direct forces.
With simple machines we don't have to push or pull as hard, but we have to push or pull over a longer
distance. It's easier to walk up a long set of stairs to the top of the Empire State Building than it would
be to climb a ladder to the top, but the set of stairs would be much longer than the ladder.
Simple machines are simply scientific.

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