Work in Physics

Front

What is Work in Physics?

Back

Work is defined as the transfer of energy that occurs when an object is moved over a distance by an external force. It is calculated as the product of the force applied and the distance moved in the direction of the force.

Front

What is the formula for calculating Work?

Back

Work = Force × Distance

Front

What are the units of Work?

Back

The SI unit of work is the Joule (J), where 1 Joule is equal to 1 Newton meter (1 J = 1 N·m).

Front

How much work is done when carrying an object horizontally?

Back

When carrying an object horizontally, if there is no vertical displacement, the work done is 0 J, regardless of the weight of the object.

Front

What is the work done by a normal force on an object sliding down an incline?

Back

The work done by the normal force is zero because the normal force acts perpendicular to the direction of motion.

Front

What is the work done by friction on an object moving down an incline?

Back

The work done by friction is negative because it opposes the direction of motion.

Front

If a force of 10 N is applied to move an object 5 m, how much work is done?

Back

Work = Force × Distance = 10 N × 5 m = 50 J.

Front

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

Back

Work is directly proportional to both the force applied and the distance over which the force is applied.

Front

What happens to the work done if the distance is doubled while the force remains constant?

Back

If the distance is doubled, the work done also doubles, assuming the force remains constant.

Front

What is the significance of the angle between the force and displacement in calculating work?

Back

The angle affects the amount of work done; work is maximized when the force is applied in the same direction as the displacement.