Compare the power at which each of the following is moving upwards against the force of gravity? (given g = 10 m s–2) (i) a butterfly of mass 1.0 g that flies upward at a rate of 0.5 m s–1. (ii) a 250 g squirrel climbing up on a tree at a rate of 0.5 m s–1.

Question

Accepted Answer

Soln:

Butterfly force= mg=1/100 power=f&times;s&divide;t. {s&divide;t=velocity} power=1&divide;100&times;.5 power=1&divide;200W


squirrel force=mg=25 power=25&times;.5 power=12.5W

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