Work/ Power

Front

What is Work in physics?

Back

Work is defined as the amount of energy transferred by a force acting over a distance. It is calculated as the product of the force and the distance moved in the direction of the force.

Front

What is Power in physics?

Back

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

Front

What is the formula for calculating Work?

Back

Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the SI unit of Work?

Back

The SI unit of Work is the Joule (J).

Front

What is the SI unit of Power?

Back

The SI unit of Power is the Watt (W), which is equivalent to one Joule per second.

Front

How is Power related to Work and Time?

Back

Power is directly proportional to Work and inversely proportional to Time. The formula is Power = Work / Time.

Front

What is an example of Work being done?

Back

An example of Work is a horse pulling a plow through a field, as it involves a force causing displacement.

Front

What is the relationship between Force, Work, and Displacement?

Back

Work is done when a force causes an object to move. The amount of Work done depends on the magnitude of the force and the distance moved in the direction of the force.

Front

What does it mean if a force is applied but no Work is done?

Back

If a force is applied but there is no displacement (e.g., holding an object still), then no Work is done, even though a force is exerted.

Front

What is the formula to calculate Time when Work and Power are known?

Back

Time can be calculated using the formula: Time = Work / Power.