rocket of initial mass, mi , starts at rest and propels itself by an engine ejecting photons backwards. After the rocket has reached a speed of v, it switches off its engine and its final mass is mf . By using four-momenta and three-momenta for the rocket and photon beam, calculate the ratio of the initial to final mass for the rocket as a function of β only. (β = v/c).                 Needs Complete typed solution with 100 % accuracy.

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A rocket of initial mass, mi , starts at rest and propels itself by an engine ejecting photons backwards. After the rocket has reached a speed of v, it switches off its engine and its final mass is mf . By using four-momenta and three-momenta for the rocket and photon beam, calculate the ratio of the initial to final mass for the rocket as a function of β only. (β = v/c).                

Needs Complete typed solution with 100 % accuracy.                

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