A person having a load on his head is walking with uniform velocity on a horizontal road. The value of workdone is.......
Positive
Negative
Zero
All of these
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No, when person having a load on his head is walking with uniform velocity on a horizontal road work is not done. This is because work is not done when the force applied is perpendicular to the direction of displacement. when it is so it becomes 0 work done or no work.
Zero is correct answer.
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