EXERC
Ir R is the radius of the earth and the
acceleration due to gravity on the earth's
surface, the mean density of the earth is
(1) 4G/3gR
(2) 36R/4G
A384 RG
(4) Rg/126
Answers
Answered by
0
Answer:
Increase in potential energy
ΔU=U
2
−U
1
=[−
(R+
5
R
)
GMm
]−[−
R
GMm
]
=
R
GMm
−
6R
5GMm
=
6R
GMm
=
6R
gR
2
m
=
6
mgR
=mg.
6
5h
=
6
5
mgh
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