Social Sciences, asked by ghanshayambind7894, 9 months ago

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 koushikmkj
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 nirajsonisoni27
2

Answer:

2 M is the right answer

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