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Simple machines-Gil
Simple Machines- Gilbert
| Question | Answer |
|---|---|
| Force is measured (labled) in ____________ | Newtons |
| Work is measured (lableed) in ___________ | Joules |
| Power is measured in ____________ | Watts |
| Mechanical advantage | NO Unit |
| Formula for finding force | Mass X gravity |
| Formula for finding work | Force X distance |
| Forumula for finding Power | Work divided by time |
| Formula for finding mechanical advantage | output force divided by input force |
| Work | When a froce causes an object to move inthe direction of the force |
| Power | How fast energy is used |
| machines | makes life easier by spreading the force over a longer distance. Machines do not change how much work is done. |
| Name the 6 simple machines (SAWLIP) | Screw, Axle and wheel, Wedge, lever, Inclined Plane (ramp), Pulley |
| screw | an inclined plane that is wrtapped in a spiral |
| work you do on a machine is called ______ | work input |
| inclined plane | a simple machine that is a straight, lanted surface |
| Mechanical advantage | compares the input force with the output force |
| All machines are constructed from 6 ___________________ | simple machines |
| block and tackle | when 2 kinds of pulleys are used together |
| lever | A simple machine with a bar that pivots at a fixed point |
| simple machine | A device that helps make work easier by chnaging the size or direction of force |
| wedge | A double inclined plane that moves |
| Work output | The work done by a machine |
| wheel and axle | A simple machine that consists of 2 circular objects of different sizes |
| pulley | A simple machine that has agrooved wheel that holds a rope or a cable |
| compound | Machines that are made of two or more simple machines |
| fulcrum | The fixed point at whcih a lever pivots |
| Name 2 kinds of pulleys | FixedMoveable |
| mechanical efficiency | the comparison of a machines work output with the work input |