anonymous
  • anonymous
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
Physics
jamiebookeater
  • jamiebookeater
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mayankdevnani
  • mayankdevnani
mass=4times of earth=4*3=12kg
mayankdevnani
  • mayankdevnani
ok @ashna
mayankdevnani
  • mayankdevnani
work done=potential energy

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mayankdevnani
  • mayankdevnani
potential energy=mass*gravity*height
mayankdevnani
  • mayankdevnani
P.E=12*10*3=120*3=360J
mayankdevnani
  • mayankdevnani
so work done=360J
mayankdevnani
  • mayankdevnani
got it @ashna
anonymous
  • anonymous
yea :) ty !
mayankdevnani
  • mayankdevnani
right @ajprincess

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