Question

when is work said to be done

Answer 1

$<b>hey there..!!$

here is ur ans...

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✴ Work is done when the object moves through a certain distance in a particular direction after the force had been applied on it.

Work Done = Force x Distance x Cos theta

For work to be done, the force must be applied and must not be zero.The body on which the force is applied must move in one direction or the other and hence the S must not be zero.The force must not be applied at 90 degrees angle upon the object as Cos 90 equals zero.

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#Be brainly

Answer 2

☆☆ AS-SALAMU-ALYKUM ☆☆

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WORK IS SAID TO BE DONE WHEN A FORCE DISPLACES A BODY IN ITS OWN DIRECTION

W=F.S

W= FS COS THETA

MAXIMUM WORK DONE :-
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WORK IS MAXIMUM WHEN FORCE AND DISPLACEMENT ARE IN SAME DIRECTION .

THAT IS WHEN ANGLE IS ZERO DEGREE

W= FS COS 0°

WE KNOW THAT COS 0 =1

SO

W = FS

ZERO WORK DONE :-
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AND WORK IS ZERO WHEN FORCE AND DISPLACEMENT ARE AT RIGHT ANGLE TO EACH OTHER THAT IS

W=FSCOS THETA

W = FSCOS 90

COS 90 =0

SO

W=FS (0)

W=0

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