If the radius of the Earth contracts by 1% and mass remains the same, what would be the effect on our weight?
A
Increases
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B
Decreases
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C
Remains the same
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D
Becomes zero
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Solution
The correct option is A Increases On the Earth, acceleration due to gravity is given by: g=GMR2 where: ′G′ is the gravitational constant ′M′ is the mass of the Earth ′R′ is the radius of the Earth.
As the value of ′R′ decreases, the value of 'g' would increase. Weight is given by mg and so the weight also increases. In fact, the weight increases by approximately 2%.