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A pair of bullocks exerts a force of 140 N on a plough to plough a field that is 15 m long. How much work is done in ploughing the length of the field?

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1200 J

4800 J

2100 J

2400 J

answer is C.

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Detailed Solution

Force, F = 140 N
Displacement, s= 15 m in the direction of the force

Work is said to be done when a force applied to an object moves that object.
When displacement is in the direction of force, work done is given by:
Work done = Force × Displacement

Substituting the values,
W= 140 x 15
W = 2100 J

Therefore, the work done will be 2100 J.

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