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Simple machine's
Vocab words for test
Question | Answer |
---|---|
Work | the transfer of energy that occurs when a force is applied over a distance |
Power | the rate at which work is done |
mechanical advantage | The ratio of a machine's output force produced to the input force applied |
efficiency | A machine is the ratio of the output work to the input work |
Simple machine | Do work using only one movement |
Lever | A simple machine made up of a bar that pivots, or rotates, about a fixed point |
fulcrum | The point about which a lever pivots |
Wheel and Axle | an axle attached to the center of a wheel and both rotate together |
inclined plane | A flat, sloped surface |
wedge | A sloped surface that move |
Screw | Is an inclined plane wrapped around a cylinder |
pulley | A simple machine that is a grooved wheel with a rope or a cable wrapped around it |