Question

A women who normally weighs 400 N stands on top of a ladder so high she is one full additional earth radius above the surface of the earth. How much does she weigh now

Answer 1

The woman weighs 100N now.

Step-by-step explanation:

Given:

F is given as 400N

one full additional earth radius formed

To Find:

Weight of the woman=?

Solution:

We know that gravitational force is inversely proportional to the square of radius.

`f_g=(1)/(r^2)`

where

`f_g` is the gravitational force

`r^2` is the radius square

So when radius is doubled, the force becomes one fourth of the original.

Therefore
`(1)/(4) *400 = 100N`