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If force and displacement of particle in...

If force and displacement of particle in direction of force doubled. Work would be

A

Double

B

4 times

C

half

D

`(1)/(4)` times

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The correct Answer is:
B
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Mathematically, work is defined as the product of froce and displacement through which force acts. If F is the applied force, 'S' is the displacement in the direction of applied force and W is the work done, then : Work done = Force xx Displacement through which force acts. W = F xx S The SI unit of work is Joule (J) and cgs unit is erg. 1 J = 10^(7) erg. How much work is done by a person who uses a force of 50 N to move a grocery buggy 10 m ?

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A force of 7N acts on an object. The displacement is, say 8m, in the direction of the force, Let us take it that the force acts on the object throughout the displacement. What is the work done in this case ?

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ERRORLESS -WORK, ENERGY, POWER & COLLISION-Assertion
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