(C) The motion of a rocket is based on the principle of conservation of linear momentum.As the fuel burns,hot gases are ejected from the nozzle of the

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React against the rocket and push it up

(C) The motion of a rocket is based on the principle of conservation of linear momentum.As the fuel burns,hot gases are ejected from the nozzle of the rocket at a very high velocity in the downward direction.According to Newton's third law of motion,these gases exert an equal and opposite reaction force on the rocket in the upward direction.This upward force provides the necessary thrust to lift the rocket against gravity.

Class 11 Physics Newton's Laws of Motion and Friction Variable Mass System and Rocket Problem

Easy

Rocket engines lift a rocket from the earth's surface because hot gas with high velocity

AIIMS 1998 All AIIMS

A
Push against the earth
B
Push against the air
C
React against the rocket and push it up
D
Heat up the air which lifts the rocket

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Class 11 Questions

Class 11

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Chapter

Newton's Laws of Motion and Friction

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Variable Mass System and Rocket Problem

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AIIMS 1998 Paper All AIIMS years →

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In a rocket,fuel burns at the rate of $1\; kg/s$. This fuel is ejected from the rocket with a velocity of $60\; km/s$. This exerts a force on the rocket equal to ......... $N$.

EasyAIPMT 1994

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Consider a rocket is being fired. The kinetic energy of the rocket is increased by $16$ times, whereas its total mass is reduced by half through the burning of fuel. The factor by which its momentum increases is

MediumTS EAMCET 2021

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The rate of fuel consumption in a rocket is $40 \ kg/s$. The velocity of the exhaust gases coming out of the rocket is $5 \times 10^4 \ m/s$. What is the thrust force acting on the rocket?

Difficult

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Rocket engines lift a rocket from the earth's surface because hot gas with high velocity

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$A$ train is moving with a velocity of $20 \, m/s$. Dust is falling on it at the rate of $50 \, kg/min$. The extra force required to move this train with a constant velocity will be ....... $N$.

$A$ $6000 \,kg$ rocket is set for firing. If the exhaust speed is $1000 \,m/s$,how much gas must be ejected each second to supply the thrust needed to overcome the weight of the rocket?

In a rocket,fuel burns at the rate of $1\; kg/s$. This fuel is ejected from the rocket with a velocity of $60\; km/s$. This exerts a force on the rocket equal to ......... $N$.

Consider a rocket is being fired. The kinetic energy of the rocket is increased by $16$ times, whereas its total mass is reduced by half through the burning of fuel. The factor by which its momentum increases is

The rate of fuel consumption in a rocket is $40 \ kg/s$. The velocity of the exhaust gases coming out of the rocket is $5 \times 10^4 \ m/s$. What is the thrust force acting on the rocket?

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