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ashna

  • 3 years ago

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

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  1. mayankdevnani
    • 3 years ago
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    mass=4times of earth=4*3=12kg

  2. mayankdevnani
    • 3 years ago
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    ok @ashna

  3. mayankdevnani
    • 3 years ago
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    work done=potential energy

  4. mayankdevnani
    • 3 years ago
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    potential energy=mass*gravity*height

  5. mayankdevnani
    • 3 years ago
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    P.E=12*10*3=120*3=360J

  6. mayankdevnani
    • 3 years ago
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    so work done=360J

  7. mayankdevnani
    • 3 years ago
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    got it @ashna

  8. ashna
    • 3 years ago
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    yea :) ty !

  9. mayankdevnani
    • 3 years ago
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    right @ajprincess

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