In a rocket of mass 1000kg fuel is consumed at a rate of 40kg- 1s. The velocity of the gases ejected from the rocket is 5× 104ms- 1. The thrust on the rocket is:-

Question

In a rocket of mass 1000kg fuel is consumed at a rate of 40kg- 1s. The velocity of the gases ejected from the rocket is 5× 104ms- 1. The thrust on the rocket is:- (A) 2× 103N (B) 5× 104N (C) 2× 106N (D) 2× 109N

Tardigrade Admin · Accepted Answer

F=Vr⋅ (d m/d t)=5× 104× 40 F=2× 106

Q. In a rocket of mass $1000 k g$ fuel is consumed at a rate of $40 k g^{- 1} s .$ The velocity of the gases ejected from the rocket is $5 \times 1 0^{4} m s^{- 1} .$ The thrust on the rocket is:-

$2 \times 1 0^{3} N$

$5 \times 1 0^{4} N$

$2 \times 1 0^{6} N$

$2 \times 1 0^{9} N$

$F = V_{r} \cdot \frac{d m}{d t} = 5 \times 1 0^{4} \times 40$
$F = 2 \times 1 0^{6}$

Q. In a rocket of mass 1000kg fuel is consumed at a rate of 40kg−1s. The velocity of the gases ejected from the rocket is 5×104ms−1. The thrust on the rocket is:-

2×103N

5×104N

2×106N

2×109N