Which of the following does not posses the ability to do work not because of motion ?
1) a sparrow flying in the sky
2) a sparrow moving slowly on the ground
3) a sparrow in the nest on a tree
4) a squirrel going up a tree
With appropriate reason
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Answer:
The correct answer to the given question is option (1)
Explanation:
The reason for choosing option (1) as the correct answer is in the explanation of work done and motion. We always consider a work to be done when the force acting on an object is perpendicular or in any angle with the displacement taking place.
In the case of the flying bird, the force applied is in the forward direction and the displacement is also in the same direction. This means that the bird is not doing any work according to physics.
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