The weight of an object on earth is 20 N. What is its weight on (a) a planet whose diameter is the same as that of the earth but whose mass is twice that of the earth?

1 Answer
Andrea B.
Feb 23, 2018

40 N

Explanation:

since the universal graviatation force is:
#F = K xx (M_1 xx M_2)/d^2# where M1 is the weight of the object, , M2 is the weight of the earth, d is the diameter, for a planet whose diameter is the same as that of the earth but whose mass is twice that of the earth, the weight will be twice, that is 40 N

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