7. Show that if a body is taken to a height H above
earth's surface, acceleration due to gravity
decreased by the factor RP/(R + H)2, where R is
radius of the ea5
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0
Answer:
It is ok
Explanation:
let we consider,
radius of earth R and mass is M
and we know that acceleration due to gravity at surface
g=
R
2
GM
---- (i)
G is universal gravitational constant.
consider, a mass m is at above the earth at height h and g
′
is acceleration due to gravity at height h.
Therefore, g′=
(R+h)
2
GM
----- (ii)
divide, (ii) by (i)
g
g
′
=
(R+h)
2
R
2
g
′
=
(R+h)
2
gR
2
For h<<<R,
g
′
=g(1−
R
2h
)
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