Work and Power

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the newton (N).

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated using the formula W = F × d, where F is the force applied and d is the distance moved in the direction of the force.

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move in the direction of the force.

Front

If no movement occurs, is work done?

Back

No, if there is no movement, then no work is done, regardless of the amount of force applied.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy; when work is done on an object, energy is transferred to that object.

Front

What is power in the context of work?

Back

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

Front

How do you calculate power?

Back

Power (P) can be calculated using the formula P = W / t, where W is work done and t is the time taken.

Front

What is the significance of 1 watt?

Back

1 watt is defined as 1 joule of work done per second.

Front

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

Back

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

Front

What is the effect of angle on work done?

Back

Work done is maximized when the force is applied in the same direction as the movement; if the angle between the force and the direction of movement is 90 degrees, no work is done.