A rocket of mass `20kg` has `180kg` fuel. The exhaust velocity of the fuel is `1.6km//s`. Calculate the minimum rate of consumption of fuel so that the rocket may rise from the ground. Also, calculate the ultimate vertical speed gained by the rocket when the rate of consumption of fuel is `(g=9.8m//s^2)`
(i) `2kg//s` (ii) `20kg//s`

A rocket of mass 40kg has 160kg fuel. The exhaust velocity of the fuel is 2.0km//s . The rate of consumption of fuel is 4kg//s . Calculate the ultimate vertical speed gained by the rocket. (g=10m//s^2)

A rocket of mass 40kg has 160kg fuel. The exhaust velocity of the fuel is 2.0km//s . The rate of consumption of fuel is 4kg//s . Calculate the ultimate vertical speed gained by the rocket. (g=10m//s^2)

(a) A rocket set for vertical firing weighs 50kg and contains 450kg of fuel. It can have a maximum exhaust velocity of 2km//s . What should be its minimum rate of fuel consumption (i) to just lift off the launching pad? (ii) to give it an initial acceleration of 20m//s^2 ? (b) What will be the speed of the rocket when the rate of consumption of fuel is 10kg//s after whole of the fuel is consumed? (Take g=9.8m//s^2 )

(a) A rocket set for vertical firing weighs 50kg and contains 450kg of fuel. It can have a maximum exhaust velocity of 2km//s . What should be its minimum rate of fuel consumption (i) to just lift off the launching pad? (ii) to give it an initial acceleration of 20m//s^2 ? (b) What will be the speed of the rocket when the rate of consumption of fuel is 10kg//s after whole of the fuel is consumed? (Take g=9.8m//s^2 )

The force on a rocket moving with a veloctiy 300 m/s is 210N. The rate of consumption of fuel of rocket is

The force on a rocket moving with a veloctiy 300 m/s is 210N. The rate of consumption of fuel of rocket is

The force on a rocket moving with a veloctiy 300 m/s is 210N. The rate of consumption of fuel of rocket is