In a rocket, fuel burns at the rate of 2 kg / s. This fuel gets ejected from the rocket with a velocity of 80 km / s. Force exerted on the rocket is

Question

In a rocket, fuel burns at the rate of 2 kg / s. This fuel gets ejected from the rocket with a velocity of 80 km / s. Force exerted on the rocket is (A) 16,000 N (B) 1,60,000 N (C) 1600 N (D) 16 N

Tardigrade Admin · Accepted Answer

For variable mass system F=(u d m/d t) =80 × 103 × 2=1,60,000 N

Q. In a rocket, fuel burns at the rate of $2 k g / s$ . This fuel gets ejected from the rocket with a velocity of $80 km / s$ . Force exerted on the rocket is

16,000 N

1,60,000 N

1600 N

16 N

For variable mass system $F = \frac{u d m}{d t}$
$= 80 \times 1 0^{3} \times 2 = 1, 60, 000 N$

Q. In a rocket, fuel burns at the rate of 2kg/s. This fuel gets ejected from the rocket with a velocity of 80km/s. Force exerted on the rocket is