Solve the following examples.
a. An object takes 5 s to reach the grond
from a height of 5 m on a planet.
What is the value of g on the planet?
Ans: 0.4 m/s2
b. The radius of planet A is half the
radius of planet B. If the mass of A is
M , what must be the mass of B so
that the value of g on B is half that of
its value on A?
Ans: 2M
A
Answers
Answered by
2
Answer:
a.An object take 5 sec to reach the ground from the height of 5 meters on a planet. What is the value of gravity on the planet? =>(25/2)a=5=>a=2/5 m/s²=0.4 m/s².
b.g=
R
2
GM
⟹M=
G
gR
2
Here,
g
A
g
B
=
2
1
and
R
A
R
B
=2
⟹
M
A
M
B
=
g
A
g
B
(
R
A
R
B
)
2
⟹
M
A
M
B
=
2
1
(2)
2
⟹M
B
=2M
A
Explanation:
Answered by
2
Answer:
2 M is the right answer
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