- #1
SpartaGhost
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Hey, I'm struggling with this question, any help would be great.
A sphere of mass m impinges obliquely on a sphere of mass M, which is at rest. The coefficient of restitution between the spheres is e. Show that if m=eM, the directions of motion after impact are at right angles
My attempt was:
mUcosα = mV1 + MV2 (1)
V2-V1 = e(Ucosα) (2)
since m=eM
=> eMcosα = eMV1 + Mv2 then /m
so subtracting the equations gives
eUcosα = eV1 + V2
- eUcosα = V2 - V1
=> 0 = eV1 + V1
e = -1
which is where I just don't understand what to do now :(
A sphere of mass m impinges obliquely on a sphere of mass M, which is at rest. The coefficient of restitution between the spheres is e. Show that if m=eM, the directions of motion after impact are at right angles
My attempt was:
mUcosα = mV1 + MV2 (1)
V2-V1 = e(Ucosα) (2)
since m=eM
=> eMcosα = eMV1 + Mv2 then /m
so subtracting the equations gives
eUcosα = eV1 + V2
- eUcosα = V2 - V1
=> 0 = eV1 + V1
e = -1
which is where I just don't understand what to do now :(