Work, Power, and Simple Machines remediation

Front

What is work in physics?

Back

Work is done when a force causes an object to move. It is calculated as the product of force and distance (Work = Force x Distance).

Front

What is the unit of work?

Back

The unit of work is the Joule (J). 1 Joule is equal to 1 Newton meter.

Front

How do you calculate work done?

Back

Work done is calculated using the formula: Work = Force x Distance.

Front

What is power in physics?

Back

Power is the rate at which work is done or energy is transferred. It is calculated as Power = Work / Time.

Front

What is the unit of power?

Back

The unit of power is the Watt (W). 1 Watt is equal to 1 Joule per second.

Front

What is a simple machine?

Back

A simple machine is a device that makes work easier by allowing us to apply force in a more efficient way. Examples include levers, pulleys, and inclined planes.

Front

What is a pulley?

Back

A pulley is a simple machine that consists of a rope or chain wrapped around a wheel, used to lift or move loads.

Front

If I push an object with a force of 10 N and move it 3 m, how much work do I do?

Back

30 Joules (Work = Force x Distance = 10 N x 3 m).

Front

If a block weighing 5000 N is lifted 10 m, how much work is done?

Back

50000 Joules (Work = Force x Distance = 5000 N x 10 m).

Front

If I use 950 J of energy to push a sofa in 5 seconds, what is my power?

Back

190 Watts (Power = Work / Time = 950 J / 5 s).