Question

Define work...........

Answer 1

$\bf \underline { \heartsuit \: Work \: \heartsuit }$

When a force acts on an object and object moves, we say that the force has done work on the object.

The work done by a force acting on an object is equal to the product of the force and the displacement of the object in the direction of the force.

Work done is the product of force and displacement.

Work done = force × displacement

If, we denote work, force and displacement by W, F and d respectively then,

W = Fd

For example, when an object Falls its displacement is in the direction of the force of gravity. Similarly, if you put a book along the table the displacement of the book is along the direction of the force you exert.

Answer 2

Heyy mate ❤✌✌❤

Here's your Answer.....

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WORK can be define as to do something which needs physical or mental effort.

FORMULA OF WORK IS

WORK = FORCE × DISPLACEMENT

=> W = F × S.

=>Few Examples are;

It include lifting an object against the Earth's gravitation, driving a car up a hill, etc.


=>Examples of Positive Work:

When a spring is stretched, the work done by the stretching force is positive as the force acts in the direction of displacement of the spring.



=>Examples of Negative Work:

The work done against friction is negative as the frictional force is always in direction opposite to displacement.



=>Examples of Zero Work:

The work done by the centripetal force acting on a body moving in a circle with uniform speed is zero as it is always at right angle to the direction of motion of the body.
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