Systems of Particles and Rotational Motion questions
1884 published questions with worked solutions.
- Impulse is
- A boy of mass 0.25 kg is projected with muzzle velocity 100 ms⁻¹ from a tank of mass 100 kg. What is the recoil velocity of the...
- If the force on a rocket, having exhaust velocity of 300 m/sec, is 210 N, then the rate of combustion of the fuel is
- A diwali rocket is ejecting 0.05 kg of gases per second at a velocity of 400 m/sec. The accelerating force on the rocket is
- A stationary bomb explodes into three pieces. One piece of 2 kg mass moves with a velocity 8 ms⁻¹ at right angles to the other...
- A shell at rest at the origin explodes into three fragments of masses 1 kg, 2 kg and m kg. The 1 kg and 2 kg pieces fly off with...
- The motion of a rocket is based on the principle of conservation of
- An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are: a 1 kg first part...
- A wagon weighing 1000 kg is moving with a velocity of 50 km/h on a smooth horizontal track. A mass of 250 kg is dropped into it....
- In the first second of its flight, a rocket ejects 1/60 of its mass with a velocity of 2400 ms⁻¹. The acceleration of the rocket...
- A rocket of mass 100 kg burns 0.1 kg of fuel per sec. If the velocity of the exhaust gas is 1 km/sec, then it lifts with an...
- A train is moving with velocity 20 m/sec. On this, dust is falling at the rate of 50 kg/minute. The extra force required to move...
- A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of mass one kg. By what velocity the gun rebounds backward?
- A body of mass 1000 kg is moving horizontally with a velocity 50 m/s. A mass of 250 kg is added. Find the final velocity.
- A large force is acting on a body for a short time. The impulse imparted is equal to the change in
- A ball of mass 150 g starts moving with an acceleration of 20 m/s². When hit by a force, which acts on it for 0.1 sec, the...
- A bullet is fired from a gun. The force on the bullet is given by F = 600 − 2 × 10⁵t, where F is in newtons and t is in seconds....
- If a force of 250 N acts on a body, the momentum acquired is 125 kg-m/s. What is the period for which the force acts on the body?
- A jet engine works on the principle of
- A shell of mass 10 kg is moving with a velocity of 10 ms⁻¹ when it blasts and forms two parts of mass 9 kg and 1 kg respectively....
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