Question

a rocket of mass 20kg has 180kg of fuel the exhaust velocity of fuel is 1 6 km/sec calculate the ultimate velocity of the rocket gained when the rate of consumption of the fuel is 2kg/sec​

Answer 1

Answer:

Velocity of rocket is given as

v=uln

M−rt

M

where M is the Total mass of rocket and fuel at t=0 second

That is,

M=20+180=200kg

and

Rate of consumption of fuel, r=2kg/sec

Velocity of gas rejection with respect to rocket, u=1.6km/sec

Ultimate velocity is achieved when all the fuel burns,

That is,

M−rt=20kg

So,

v=1.6ln

20

180

=3.515km/sec

Explanation:

Sorry for my Sh*tty typing skills. ;)

Answer 2

Answer:

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