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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 W

Squirrel is climbing with the power of 2.25 W

Explanation:

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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