A planet has mass and radius 1/3 of those of earth. Calculate the acceleration due to gravity of the planet and compare it with acceleration due to gravity on earth. If an object has 5 kg mass on earth. Calculate its weight on the planet.
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1
Explanation:
Acceleration due to gravity on earth,g=
R
2
GM
Acceleration due to gravity on planet,g
′
=
(
2
R
)
2
G(
2
M
)
=2
R
2
GM
=2g=19.6m/sec
2
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2
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