Question

it takes 20s fors a person A of mass 50kg to climb the stairs ehile another on 15 s of same mass compare the workdone and power developed?

Answer 1

it take be second force a person a mass is equal to class kg and 5S of a ship mass comparison work done and power power is equal to 45 kg
work done 5
power 5

Answer 2

Let h be the height of staircase climbed by A and B. Let mA is weight of A and mB is weight of B.

Workdone by A to climb the Staircase, WA = mA×g×h Joules

Workdone by B to climb the Staircase WB = mB×g×h Joules

Hence the ratio WA/WB = mA / mB

Power developed by A, PA = (mA×g×h)/20 watts

Power developed by B, PB = (mB×g×h)/15 watts

Power ratio PA/PB = (15mA)/(20mB) = (3mA)/(4mB)