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```        Where will a body weigh minimum ?
(A) at a height of 100 m above the earth?s surface
(B) at the earth?s surface
(C) at a depth of 100 m below the earth?s surface
(D) 50 m below the earth surface```
6 years ago

Sudheesh Singanamalla
114 Points
```										use the formulas
g ( at a height h) = g (on surface ) * [ 1 - (2h/Re) ]
g ( at a depth d ) = g (on surface) * [ 1 - (d/Re) ]
(i) using this for the 1st part g(at height h) = 9.702
(ii) g (at surface) = 9.8
(iii) g (depth of 100m) = 9.79
(iv) g (depth of 50m) =  9.8

therefore the body will weigh minimum at a height of 100 m  above the earth's surface !
```
6 years ago
Ritvik Gautam
85 Points
```										Force of gravity is maximum at the earth's surface and decreases as you go away from the earth's surface.(It is zero at the earth's surface)
Also,
W=mg
therefore, when g will be minimum, weight will be minimum, since mass is constant.
The body weight will be minimum at a height 100m above the earth's surface and 100m below the earth's surface.

```
6 years ago
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