Suppose there is a new planet. Its mass is 2me(2 × mass of earth) and its radius is 2Re(2× mass of earth). Find the acc. due to gravity of the new planet.
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ANSWER
q
′
=
R
2
GM
=
(4ve)
2
G×2me
=
8
1
ve
2
Gme
=
8
g
To find 4 times the acceleration due to gravity =4×
8
1
g=
2
g
=
2
10
=5m/s
2
Hence, the answer is 5m/s
2
.
Explanation:
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