Question

A sphere of mass 19 kg is attracted by another sphere of mass 150 kg.When their centres are separated by a distance 0.28m with a force of 2×10^-6 N.Calculate the gravitational constant.​

Answer 1

Answer:

Distance (G)=20cm=0.2m

Mass (M  

1

​  

)=40kg    Mass (m  

2

​  

)=15kg

Force (F)=0.1 milligram wt

                 =0.1×10  

−3

×980 dyne

                 =98×10  

−3

 dyne

                 =98×10  

−8

N

                 =9.8×10  

−9

N

F=  

R  

2

 

GM  

1

​  

M  

2

​  

 

​  

 

G=  

M  

1

​  

M  

2

​  

 

Fk  

2

 

​  

=  

40×15

9.8×10  

−7

×0.2×0.2

​  

 

                       =  

4×15

98×2×2

​  

×  

10×10×10×10

10  

−7

 

​  

                       =6.5×10  

−11

m  

2

/kss  

2

Explanation: