Question

37. A body weights 196 N on the surface of earth. Calculate the weight of body at height h=R. where
R=6400 km is radius of earth.​

Answer 1

Answer:

Weight of the body at a height of h = R will be -196 N

Explanation:

We have given weight of the body on the surface of earth mg = 196 N

Acceleration due to gravity $g=9.81m/sec^2$

So mass $m=\frac{196}{9.81}=19.9796kg$

We have to calculate weight of the body above the the earth at height of h = R

We know that acceleration due to gravity above the surface of earth

Lets $g_1=g(1-\frac{2h}{R})$

$g_1=9.81(1-\frac{2R}{R})=-9.81m/sec^2$

So the weight of the body at a height of h = R IS

W = mg = 19.9796 × -9.81 = -196 N