Question

A body weighs 63 N on the surface of the earth. What is the gravitational force on it at a height 100 km above the surface of the earth? You
are given with the following data: g=9.8 m/s?, RE= 6400 km)​

Answer 1

Explanation:

Weight of the body,W=63 N

Acceleration due to gravity at height h from the Earths surface is given by the relation:

g′=(1+Reh)2g

Substituting h=Re/2,

g′=4g/9

Weight of body of mass m at height h is given as:

W′=mg′

       =4/9 mg

       =4/9×63=28 N

Answer 2

Answer:

weight of the body, W= 63 N acceleration due to gravity at height H from the Earth surface is given by the relation

G'= (1+reh)2g

Substituting h=Re/2,

g'=4g/g

weight of body of mass m at height h is given as:

W'=mg'

=4/9

=4/9×63 = 28 n

Explanation:

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