Question

the man is carrying the heavy luggage from a platform to to other of a Railway Station but kill according to the logic's of science his work done his said to be zero .can you opt out the correct reason. (a) The force is acting along the direction of displacement of luggage
(b) The force is acting perpendicular to the direction of displacement of luggage
(c) The force is acting opposite to the direction of displacement of luggage
(d) None of these​

Answer 1

Answer :-

(B) The force is acting perpendicular to the direction of displacement of Luggage.

Answer 2

Answer:

The correct option is (c) The force is acting opposite to the direction of displacement of luggage.

Explanation:

(a) The force is acting along the direction of displacement of luggage:

If the man is carrying the heavy luggage and the force applied is in the direction of displacement, then work will be done according to the formula Work = Force x Displacement. The work done is positive.

(b) The force is acting perpendicular to the direction of displacement of luggage:

If the force applied is perpendicular to the direction of displacement, then no work will be done according to the formula, W= F×S In this case, the man will only be using energy to lift the luggage and not to displace it. The work done will be zero.

(c) The force is acting opposite to the direction of displacement of luggage:

If the force applied is opposite to the direction of displacement, then the work done will be negative. This means that the man is applying a force in the opposite direction to the displacement and is therefore luggage slows down and perhaps he was killed by the train.

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