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 |