A) \[\sqrt{\frac{2Gd}{M+m}}\]
B) \[\sqrt{\frac{2G(M+m)}{d}}\]
C) \[\sqrt{\frac{2GMm}{(M+m)d}}\]
D) \[\sqrt{\frac{2Gm}{d}}\]
Correct Answer: B
Solution :
1st method- Let us say the spheres are moving with velocities \[{{v}_{1}}\And {{v}_{2}}\] when they are at a separation of d. Then from momentum conservation, \[m{{v}_{1}}=M{{v}_{2}}\]You need to login to perform this action.
You will be redirected in
3 sec