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प्रश्न
An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?
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उत्तर
Given work done = 54,000J, force = 6000 N, 0 = 0°
Now work done = force x displacement x cos 0°
or displacement = `54000/6000` = 9m
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