A particle of massMdecays from rest into 2 particles. One particle has massmand the other particle is massless. Find the momentum of the massless particle (in units ofCorrect answer is '0.5'. Can you explain this answer?

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A particle of mass M decays from rest into 2 particles. One particle has mass m and the other particle is massless. Find the momentum of the massless particle (in units of

Correct answer is '0.5'. Can you explain this answer?

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A particle of massMdecays from rest into 2 particles. One particle has...

Momentum conservation

P_initial = 0
P_final = mv + p is (Here ‘p’ is momentum of the massless particle)

mv + p = 0
p = –mv

Now, for the masses particle E = p. For the particle of mass

from conservation of energy, [Take c = 1]

∴ momentum of masses particle is

The correct answer is: 0.5

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A particle of massMdecays from rest into 2 particles. One particle has massmand the other particle is massless. Find the momentum of the massless particle (in units ofCorrect answer is '0.5'. Can you explain this answer?

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