- #1
sarthak sharma
- 35
- 0
Homework Statement
If two bodies, each of mass M and radius R, initially r (r>>>R) distant away from each other start approaching each other with negligible speed then what is their speed which they collide??
Homework Equations
The Attempt at a Solution
initial energy,IE = (-G m^2) / r
final energy,FE = { (-G m^2) / 2R } + (1/2) m v^2
solving...
v = ( 2Gm [ (1/2R) - (1/r) ] ) ^ (1/2)