*EMM Vocab Terms

Effort Distance

*The distance over which the effort force acts in a simple machine.

Effort Force*The force exerted by a person or motor when using a machine to lift a load.

Joule*Unit of work and energy in the metric system. (Nm)

Inclined Plane

*A ramp or board positioned with one end higher than the other end.

Lever*A rod or similar object that rotates around a pivot point.

Load Distance

*The distance a load moves when acted on by a load force.

Load Force*The force a machine exerts to lift a load. (equal to weight when pulled straight up)

Power*The rate of doing work.

*P=W/t

Pulley*A wheel or cylinder with a rope around its outer rim.

Simple Machine

*A device that can do work and reduce the amount of effort force needed to do the work.

Watt*Unit of power in the metric system.

*1 Joule per second

Work*The product of force and the distance through which it acts.

*W=Fd

*Efficiency

*The ratio of the output work to input work for a machine that tells how well it works.

*Ideal Mechanical Advantage

*The ratio of effort distance to load distance.

*Input Work

*The work done by the effort force in a simple machine or motor. (FE x dE)

*Output Work

*The work done on a load by a machine or motor. (FL x dL)