Laws of MotionHard
Question
If the force on a rocket, moving with a velocity 500m/s is 400N, then the rate of combustion of the fuel will be :
Options
A.0.8kg/sec
B.10.8kg/sec
C.8kg/sec
D.1.6kg/sec
Solution
We know that
Force =
[when v is conctant]
In the given case force = 400N;
v = 500 m/sec.
Force =

[when v is conctant]
In the given case force = 400N;
v = 500 m/sec.
Create a free account to view solution
View Solution FreeMore Laws of Motion Questions
Two mass of 3 Kg and 4 Kg are suspended over a frictionless pulley by joining them. The acceleration of system will be:...Two masses of 10 kg and 5 kg are suspended from a fixed support as shown in figure. The system is pulled down with a for...A 50 kg person stands on a 25 kg platform. He pulls mass less rope which is attached to the platform via the frictionles...A block is placed on a rough horizontal plane. A time dependent horizontal force F = kt acts on the block. Here k is a p...According to figure the reading of the spring balance will be : (all contacts are smooth) [g = 10 m/s2]...