Question

Page No: 5. Two spheres of equal mosses are placed at a distance of 100m from their centers. If the gravitational force of attraction between them is 1575 Ny calculate the mass of each sphere. Given,​

Answer 1

Answer:

Explanation:

Correct option is

B

6.67×10  

−11

N

The centre of mass of each sphere lies at the centre of the sphere. Thus, the spheres can be considered to be equal to point masses and they are separated by a distance equal to R=2×r=1 m

The gravitational force of attraction is given by F=  

R  

2

 

Gm  

1

​

m  

2

​

 

​

 

Hence,

The force of attraction between them is F=  

R  

2

 

Gm  

2

 

​

=  

1  

2

 

G1  

2

 

​

=6.67×10  

−11

N