A man has a luggage of 10 kg on his head. He moves 10 m and comes back to the same place. What is the work done by the man?
(a) 0 J
(b) 1000 J
(c) 2000 J
(d) 4000 J
PLEASE SEND SOLUTION WITH REASON OTHERWISE YOUR ANSWER WILL BE REPORTED
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A man has a luggage of 10 kg on his head. He moves 10 m and comes back to the same place. What is the work done by the man?
(a) 0 J
(b) 1000 J
(c) 2000 J
(d) 4000 J
PLEASE SEND SOLUTION WITH REASON OTHERWISE YOUR ANSWER WILL BE REPORTED
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Work done (\(W\)) is given by the formula \(W = \text{force} \times \text{distance} \times \cos(\theta)\), where \(\theta\) is the angle between the force and the direction of displacement.
In this case, the man is carrying the luggage vertically (up or down), and the vertical displacement is zero because he comes back to the same place. Therefore, the work done is zero (\(W = 0\)).
So, the correct option is:
(a) 0 J
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In short Force aur displacement ke beech ka angle 90° hai aur cos 90 = 0 hota hai toh Work =0