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Q.

What is the essential condition for work to be done in a scientific sense?


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a

Force removed and Displacement applied

b

Force produced and Displacement applied

c

Force applied and Displacement produced

d

Force applied and Energy produced 

answer is C.

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Detailed Solution

This is because work done on a body is equal to the increase in the energy of the body. Therefore the product of displacement of an object and the components of the applied force which is in the direction of the objects displacement is measured. Hence, it is a vector quantity.
 
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What is the essential condition for work to be done in a scientific sense?