Work & Mechanical Advantage

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.

Front

What unit is work measured in?

Back

Work is measured in joules (J).

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied to it.

Front

What does power measure?

Back

Power measures the rate at which work is done or energy is transferred, typically measured in watts (W).

Front

How can you increase power output?

Back

You can increase power output by doing more work in less time, such as pedaling faster on a bike.

Front

What is the output force of a machine?

Back

The output force is the force exerted by a machine on an object.

Front

What is an example of a simple machine?

Back

Examples of simple machines include levers, pulleys, inclined planes, screws, and wheels and axles.

Front

What is a wheel and axle?

Back

A wheel and axle is a type of simple machine made of two circular objects fastened together that rotate about a common axis.

Front

What is the difference between input force and output force?

Back

Input force is the force applied to a machine, while output force is the force exerted by the machine on an object.

Front

What is efficiency in the context of machines?

Back

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