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At which depth from Earth surface, accel...

At which depth from Earth surface, acceleration due to gravity is decreased by 1 % ?

Text Solution

Verified by Experts

Frictional decrease in the value `g` with depth
`(Deltag_(d))/(g)=(d)/(R_(e))rArr(1)/(100)=(d)/(6400)rArrd=64 `km
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Knowledge Check

  • If R is the radius of the Earth then the height above the Earth's surface at which the acceleration due to gravity decreases by 20% is

    A
    `((sqrt5)/(2)-1)R`
    B
    `((sqrt5)/(2)+1)R`
    C
    `(5sqrt2-1)R`
    D
    `(5sqrt2+1)R`
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