Across
- 3. The exertion of force over a distance, resulting in the displacement or movement of an object.
- 5. A rigid bar that rotates around a fixed point called a fulcrum. It is used to lift or move loads.
- 6. A basic mechanical device that applies a single force to accomplish work. Examples include levers, pulleys, inclined planes, wedges, screws, and wheels and axles.
- 8. A simple machine consisting of an inclined plane wrapped around a cylindrical post. It is used to hold objects together or to lift or move them.
- 9. A simple machine consisting of a wheel attached to a smaller cylinder (the axle). It is used to transmit power or force.
- 12. the direction that a force must be in relationship to the direction of the displacement in order for the force to perform work.
- 13. A sloping surface, such as a ramp, that reduces the amount of force required to raise a load by increasing the distance over which the force must be applied.
- 14. The ratio of useful work output to the total work input, often expressed as a percentage.
- 15. A push or pull exerted on an object that causes it to change its velocity or direction.
Down
- 1. A simple machine consisting of a wheel with a groove in which a rope or cable can run. It is used to change the direction of a force or to transmit power.
- 2. The units that work is measured in.
- 4. A machine that consists of two or more simple machines working together to accomplish a task.
- 7. The ratio of the output force exerted by a machine to the input force applied to it.
- 10. a device that changes the force or increases the motion from work.
- 11. A simple machine that is thick at one end and tapers to a thin edge at the other. It is used to separate, lift, or hold objects in place.
- 15. The fixed point around which a lever pivots or rotates.