Question

) If the Earth shrinks to 50% of its real radius
its mass remaining the same, the weight of a
body on the Earth will

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Answer 1

Answer:

Explanation:

weight of the object is given by, W = mg, where g is acceleration due to gravity.

and we know as well, acceleration due to gravity is inversely proportional to r² [i.e., g = GM/r² ]

so, if earth shrinks to 50% of its real radius. acceleration due to gravity become 4 times of its initial value.

then, weight of a body becomes 4 times. i.e. W' = 4mg

so, percentage increase = (4mg -mg)/mg × 100 = 300%

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Good LucK!

Answer 2

Answer:

when was the Soviet sent the tortoise to the space