Chapter 8 – COM, Momentum and Collision
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 8 - COM, Momentum and Collision
Ball 1 collides with an another identical ball 2 at rest as shown in figure. For what value of coefficient of restitution e, the velocity of second ball becomes two times that of 1 after collision?
26
Nov
Ball 1 collides with an another identical ball 2 at rest as shown in figure. For what value of coefficient of restitution e, the velocity of second ball becomes two times that of 1 after collision? Ball 1 collides with an another identical ball 2 at rest as shown in figure. For what value of [...]
Displacement of a particle of mass 2 kg moving in a straight line varies with time at s=(2t3+2)m. Impulse of the force acting on the particle over a time interval between t=0 and t=1 s in?
26
Nov
Displacement of a particle of mass 2 kg moving in a straight line varies with time at s=(2t3+2)m. Impulse of the force acting on the particle over a time interval between t=0 and t=1 s in? Displacement of a particle of mass 2 kg moving in a straight line varies with time at s=(2t3+2)m. Impulse [...]
A 2kg toy car can move along x−axis. Graphs shows resultant force Fx , acting on the car which begins at rest at time t=0 . The velocity of the car at t=10s is
26
Nov
A 2kg toy car can move along x−axis. Graphs shows resultant force Fx , acting on the car which begins at rest at time t=0 . The velocity of the car at t=10s is A 2kg toy car can move along x−axis. Graphs shows resultant force Fx acting on the car which begins at rest [...]
A rocket of mass 4000 kg is set for vertical firing. How much gas must be ejected per second so that the rocket may have initial upwards acceleration of magnitude 19.6 m/s2 [Exhaust speed of fuel =980m/s]
26
Nov
A rocket of mass 4000 kg is set for vertical firing. How much gas must be ejected per second so that the rocket may have initial upwards acceleration of magnitude 19.6 m/s2 [Exhaust speed of fuel =980m/s] A force exerts an impulse I on a particle changing its speed from u to 2u. The applied [...]
An open water tight railway wagon of mass 5×103kg coasts at an initial velocity of 1.2m/s without friction on a railway track. Rain falls vertically downwards into the wagon. What change then occurred in the kinetic energy of the wagon, when it has collected 103 kg of water ?
26
Nov
An open water tight railway wagon of mass 5×103kg coasts at an initial velocity of 1.2m/s without friction on a railway track. Rain falls vertically downwards into the wagon. What change then occurred in the kinetic energy of the wagon, when it has collected 103 kg of water ? A force exerts an impulse I [...]
A ball is projected from ground with a velocity V at an angle θ to the vertical. On its path it makes an elastic collision with a vertical wall and returns to ground.The total time of flight of the ball is
26
Nov
A ball is projected from ground with a velocity V at an angle θ to the vertical. On its path it makes an elastic collision with a vertical wall and returns to ground.The total time of flight of the ball is A force exerts an impulse I on a particle changing its speed from u [...]
A force exerts an impulse I on a particle changing its speed from u to 2u. The applied force and the initial velocity are oppositely directed along the same line. The work done by the force is:
26
Nov
A force exerts an impulse I on a particle changing its speed from u to 2u. The applied force and the initial velocity are oppositely directed along the same line. The work done by the force is: A force exerts an impulse I on a particle changing its speed from u to 2u. The applied [...]
three blocks are initially placed as shown .in figure block A has a mass m and initial velocity v to the right. block B with mass m and block C with mass 4m are initially at rest.Neglecting friction all collisions are elastic . find the final velocity of blcok A.
26
Nov
three blocks are initially placed as shown .in figure block A has a mass m and initial velocity v to the right. block B with mass m and block C with mass 4m are initially at rest.Neglecting friction all collisions are elastic . find the final velocity of blcok A. A ball of mass 50g [...]
A stationary body explodes into two fragments of masses m1 and m2. If momentum of one fragment is p, the energy of explosion is
26
Nov
A stationary body explodes into two fragments of masses m1 and m2. If momentum of one fragment is p, the energy of explosion is A stationary body explodes into two fragments of masses m1 and m2. If momentum of one fragment is p the energy of explosion is November 26, 2020 Category: Arihant Physics by [...]
There are hundred identical blocks equally spaced on a frictionless track as shown in the figure . Initially , all the blocks are separate . Each collision is perfectly inelastic . The final velocity will be.
26
Nov
There are hundred identical blocks equally spaced on a frictionless track as shown in the figure . Initially , all the blocks are separate . Each collision is perfectly inelastic . The final velocity will be. all the blocks are separate . Each collision is perfectly inelastic . The final velocity will be. There are [...]