the weight of an object at the surface of Earth is 600 Newton the weight of the same object at the surface of another planet whose radius and mass both are doubled to that of Earth .
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Answer:
300 N is the correct answer
Explanation:
Weight on earth= mg= 600 N
(Take g= 10m/s²)
m= 60 kg
g= GM/R² (G is gravitational
constant,M is mass of
earth, R is radius)
If the other planet has mass 2M and radius 2R
g on new planet = G(2M) /(2R) ²
= 2GM/4R²
= 2g/4
= 5 m/s²
Weight on new planet is mg(new)
Weight= 60(5) N
= 300 N
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