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For perfectly inlastic collision, what must be done on, mass,mommentum or inertia,for the final K.E to be zero.

For perfectly inlastic collision, what must be done on, mass,mommentum or inertia,for the final K.E to be zero.

Grade:12th pass

1 Answers

Piyush Kumar Behera
417 Points
5 years ago
Hey Mamush,
First of all for a perfectly inelastic collision the two bodies will stick togetther after they collide.
this is because the final velocity of separation will be zero (refer topic notes...).
So to achieve a zero final kinetic energy the two bodies stick together will have zero velocity.
let mass be m1 and m2 and initial velocity be  v1 and v2.
 So to achieve zero final velocity and hence zero final momentum,initial momentum must also be zero.
m1v1+m2v2=0
m1v1=  -m2v2.
Hence this is the condition for momentum and from this you can find mass relations.
 
Thanks & Regards
Piyush Kumar Behera
IIT (ISM) Dhanbad
 
 

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