Machines, Mechanical Advantage & Efficiency

Front

What is Mechanical Advantage?

Back

Mechanical advantage is a measure of how much a machine multiplies the input force.

Front

What is a wheel and axle?

Back

A simple machine made of two circular or cylindrical objects fastened together that rotate about a common axis.

Front

How do you calculate the ideal mechanical advantage of an inclined plane?

Back

The ideal mechanical advantage (IMA) of an inclined plane is calculated by dividing the height of the incline by the length of the slope.

Front

What is the ideal mechanical advantage of an inclined plane with a height of 4 cm and a slope of 16 cm?

Back

4

Front

What does a machine with a mechanical advantage less than 1 indicate?

Back

It does not multiply the force, but increases distance and speed.

Front

What happens to the overall efficiency of a machine as more machines are added?

Back

For each simple machine you add, the overall efficiency decreases.

Front

Define efficiency in the context of machines.

Back

Efficiency is the ratio of useful work output to the total work input, often expressed as a percentage.

Front

What is the formula for calculating efficiency?

Back

Efficiency (%) = (Useful Work Output / Total Work Input) x 100.

Front

What is a pulley?

Back

A simple machine that consists of a wheel on an axle or shaft designed to support movement and change the direction of force.

Front

What is a compound machine?

Back

A machine that is made up of two or more simple machines working together.