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Question
An engine of power 200 W, operates for 4 s. Find the work done by the engine. If the force developed by the engine is 100 N, calculate the maximum displacement caused.
Numerical
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Solution
Given: Power (P) = 200 W
Time (t) = 4 s
Force (F) = 100 N
Work done (W) = P × t
= 200 × 4
= 800 J
W = F × s
s = `W/F`
= `800/100`
= 8 m
Therefore, the work done is 800 J and the displacement is 8 m.
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