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Q.24. Compare the power at which each of the following is moving upwards against the force of gravity?(given g=10 m/s)i) A butterfly of mass 1 gm that flies upward at a rate 0.5 m/s.ii) A 250 gm squirrel clin bing up on a trec at a rate of 0.9 m/sOn |
Answer» Butterfly is MOVING with the POWER of 0.005 WSquirrel is climbing with the power of 2.25 WExplanation: power - = force * velocity CASE i ) force = m g = 0.001 *10 = 0.01 power = 0.01*0.5 = 0.005 W case II ) force = m g = 0.250 * 10 = 2.5 power = 2.5*0.9 = 2.25 W |
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