Work and Energy Concepts

Front

Work

Back

The transfer of energy due to a force acting over a distance. SI Unit - Joule (J)

Front

Power

Back

The rate at which work is done. SI Unit - Watt (W)

Front

Simple Machines

Back

Devices that make work easier.

Front

Mechanical Advantage

Back

The ratio of output force to input force.

Front

Efficiency

Back

The ratio of useful work output to total work input.

Front

Formula for Work

Back

W = F x d

Front

Formula for Power

Back

P = W/t

Front

Ideal Mechanical Advantage (IMA)

Back

IMA = {output distance}/{input distance}

Front

Efficiency Formula

Back

{work output}/{work input} x 100%

Front

Inclined Plane

Back

A slanted surface that reduces the force needed to lift an object. I.M.A. = {length of incline}/{height of incline}