Question

24. Weight of an object is 294 N on the surface of the earth. What is its weight at a height of 200 km from the surface of the earth. Radius of the earth= 6400 km.

Answer 1

g'= g (1 -2h /r )
mg'= mg (1- 2(200) / 6400 )
294( 6400- 400/6400)
294 ( 6000/6400)
294 ( 60/64 )
mg'= 275.625

Answer 2

g= Acceleration due to gravity

G=change in g due to height.

r=radius

h=height

G= g (1 -2h /r )

mG= mg (1- 2(200) / 6400 )

294( 6400- 400/6400)

294 ( 6000/6400)

294 ( 60/64 )

mG= 275.625

Weight changes due to height.