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प्रश्न
Suppose you are standing on a tall ladder. If your distance from the centre of the earth is 2R, what will be your weight?
संख्यात्मक
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उत्तर
The gravitational force (and hence weight) varies inversely with the square of the distance from the Earth's centre.
If your distance from the Earth's centre is 2R (where R is the Earth's radius), then
`W' = W (R/(2R))^2`
`W (1/2)^2`
= `W/4`
Your weight will be one-fourth of your weight on the Earth's surface.
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