1.

Boy of mass 40 kg climb up the stairs and reach the roof at the height of 10 meters with a weight of 10 kg in his hand in 1 min . how much power spend by the boy​

Answer»

Answer:power=force by VELOCITY

         velocity =height/time

                        =10/60 =0.16

        and force=weight =MASS by gravity                        

        THEREFORE weight =40 by 10 =50N

  THEREFORE   POWER= 50 by 0.16

                                         =8 watt

Explanation:



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