Q1Written answer
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case?
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Worked solution
When a force F acts on an object to move it in its direction through a distance S, work is done.
The work on the body is done by force.
Work done = Force × Displacement
W = F × S
Where,
F = 7 N S = 8 m
So, work done,
W = 7 × 8
W = 56 Nm
W = 56 J