Question

What is work ? How it is Done ?​

Answer 1

Answer:

work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.

Answer 2

work : The work is defined as the product of the component of force in the direction of the displacement and the magnitude of the displacement.

The work is said to be done when a force causes displacement of an object in the direction of applied force.

Explanation:

Work is of three types :

1. Positive work
2. Negative work
3. Zero work

Factore determining work are :

• work done is directly proportional to the magnitude of applied force.
• Work done is directly proportional to the displacement in the direction of applied force.

In SI , work is measured in joule ( J ) . work done is said to be one joule if a force of one Newton acting on body displaces it through one metre.