Question | Answer |
any device that makes doing work easier | machine |
the number of times a machine multiplies the input force | mechanical advantage |
output force divided by input force | mechanical advantage |
the percentage of the input work done on a machine that the machine can return in output work | efficiency |
a machine's output work divided by its input work and multiplied by 100 | efficiency |
one of the basic machines on which other mechanical machines are based | simple machines |
the inclined plane, wheel and axle, pulley, wedge, and screw | simple machines |
a solid bar that rotates or turns around a fixed point | lever |
fixed point around which a lever rotates | fulcrum |
a simple machine that is a wheel attached to a shaft or axle | wheel and axle |
a wheel with a grooved rim that turns on an axle | pulley |
a simple machine that is a sloping surface | inclined plane |
ramp | inclined plane |
a simple machine that has a thick end and a thin end | wedge |
used to cut, split, or pierce objects or to hold together | wedge |
a simple machine that is an inclined plane wrapped around a cylinder | screw |
used to raise and lower weights, as well as fasten objects | screw |
a machine that is made up of two or more machines | compound machine |
the science and technology of building electronic circuits and devices from single atoms and molecules | nanotechnology |
a machine that works automatically or by remote control | robot |