Question

On a planet whose size is same and mass 4 times as that of our earth , find the amount of work done to lift 3 kg mass vertically upwards through 3 m distance on the planet. The value of g on the surface of earth is g=10 m/s^2

Answer 1

mass=4times of earth=4*3=12kg

Answer 2

ok @ashna

Answer 3

work done=potential energy

Answer 4

potential energy=mass*gravity*height

Answer 5

P.E=12*10*3=120*3=360J

Answer 6

so work done=360J

Answer 7

got it @ashna

Answer 8

yea :)

ty !

Answer 9

right @ajprincess