Explain rocket propulsion part 2 .Jocity rocket
gas with respect to
ground i' ' The
in the forward
The linear momentum Of the mass M at is.
(M — AM) (v + At') + — u). '
Assuming no external force on the rocket-fuel
system, from (i) and (ii),
(M — AM) (v + At') + AM(v — u) Mv
At At M — A.m M
Taking the limit as At O,
ru
dt-iiZMo-rt•
This gives the acceleration of the rocket. We see
that the acceleration keeps on increasing as time
passes. If the rocket starts at t O and we neglect any
external force such as grpvity, VI,
or,
or,
dt
dv ru f
v=uln
Mo — rt
an instant
will
burk A
will still
and
spnn*
spring wi
at a ti
natural
velociti
will