Work, Power, and Machines

Front

What is work in physics?

Back

Work is defined as the product of force and the distance over which it acts. It is measured in joules (J).

Front

What is power in physics?

Back

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

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t).

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force, making work easier. Examples include levers, pulleys, and inclined planes.

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force to the input force in a machine, indicating how much a machine multiplies force.

Front

What is the formula for calculating mechanical advantage?

Back

Mechanical Advantage (MA) = Load Force / Effort Force.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface tilted at an angle to help lift objects with less effort.

Front

What is a lever?

Back

A lever is a rigid bar that pivots around a fixed point (fulcrum) to lift or move loads.

Front

What is a pulley?

Back

A pulley is a wheel on an axle designed to support movement and change the direction of force.

Front

What is the unit of work?

Back

The unit of work is the joule (J), which is equivalent to one newton-meter.