Chapter 10 – COM, Momentum and Collision
Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 10 - COM, Momentum and Collision
Consider the situation as shown in the diagram , the ball strikes the wall normally and the collision is elastic , the change in the kinetic energy of the ball is
27
Nov
Consider the situation as shown in the diagram , the ball strikes the wall normally and the collision is elastic , the change in the kinetic energy of the ball is Consider the situation as shown in the diagram the ball strikes the wall normally and the collision is elastic the change in the kinetic [...]
Two balls are thrown simultaneously from top of tower in air as shown in the figure. (i) The acceleration of the center of mass of two balls while in air is equal to g. (ii) The path followed by the center of mass is parabola. (iii) The path followed by the center of mass will be vertical line if u1 sin alpha = u2 sin beta. (iv) The acceleration of the centre of mass will change if one ball after striking the ground comes to rest.
27
Nov
Two balls are thrown simultaneously from top of tower in air as shown in the figure. (i) The acceleration of the center of mass of two balls while in air is equal to g. (ii) The path followed by the center of mass is parabola. (iii) The path followed by the center of mass will [...]
The rate of mass of the gas emitted from the rear of a rocket is initially 0.1kg/s. If the speed of the gas relative to the rocket is 50m/s and the mass of the rocket is 2kg , then the acceleration of the rocket in m/s^2 is
23
Oct
The rate of mass of the gas emitted from the rear of a rocket is initially 0.1kg/s. If the speed of the gas relative to the rocket is 50m/s and the mass of the rocket is 2kg , then the acceleration of the rocket in m/s^2 is The rate of mass of the gas emitted [...]
A block of mass m is pushed towards the movable wedge of mass M and height h, with a velocity v0. All surfaces are smooth . The minimum value of v0 for which the block will reach the top of the wedge is
23
Oct
A block of mass m is pushed towards the movable wedge of mass M and height h, with a velocity v0. All surfaces are smooth . The minimum value of v0 for which the block will reach the top of the wedge is A block of mass m is pushed towards the movable wedge of [...]
A particle of mass m, initially at rest is acted upon by a variable force F for a brief interval of time T. It begins to move with a velocity u after the force stops acting. F is shown in the graph as a function of time. The curve is a semicircle.
23
Oct
A particle of mass m, initially at rest is acted upon by a variable force F for a brief interval of time T. It begins to move with a velocity u after the force stops acting. F is shown in the graph as a function of time. The curve is a semicircle. A force - [...]
A particle of mass 2 kg is initially at rest. A fore acts on it whose magnitude changes with time. The force – time graph is shown below. The velocity of the particle after 10s is
22
Oct
A particle of mass 2 kg is initially at rest. A fore acts on it whose magnitude changes with time. The force – time graph is shown below. The velocity of the particle after 10s is A particle of mass 2 kg is initially at rest. A fore acts on it whose magnitude changes with [...]
A force – time graph for a linear motion is shown in the figure where the segments are circular. The linear momentum gained between zero and 8s is
22
Oct
A force – time graph for a linear motion is shown in the figure where the segments are circular. The linear momentum gained between zero and 8s is A force - time graph for a linear motion is shown in the figure where the segments are circular. The linear momentum gained between zero and 8s [...]
In the figure given below, the position-time graph of a particle of mass 0.1kg is shown. The impulse at t=2 sec is
22
Oct
In the figure given below, the position-time graph of a particle of mass 0.1kg is shown. The impulse at t=2 sec is In the figure given below the position-time graph of a particle of mass 0.1kg is shown. The impulse at t=2 sec is October 22, 2020 Category: Cengage NEET by C.P Singh , Chapter [...]
If two balls each of mass 0.06kg moving in opposite directions with speed 4m/s collide and rebound with the same speed , then the impulse imparted to each ball due to other is
22
Oct
If two balls each of mass 0.06kg moving in opposite directions with speed 4m/s collide and rebound with the same speed , then the impulse imparted to each ball due to other is If two balls each of mass 0.06kg moving in opposite directions with speed 4m/s collide and rebound with the same speed then [...]
A disc of mass 10g is kept floating horizontally by throwing 10marbles/second against it from below. If the mass of each marble is 5g , the velocity with which marbles are striking the disc (the marbles strike the disc normally and rebound downward with the same speed)
22
Oct
A disc of mass 10g is kept floating horizontally by throwing 10marbles/second against it from below. If the mass of each marble is 5g , the velocity with which marbles are striking the disc (the marbles strike the disc normally and rebound downward with the same speed) A disc of mass 10g is kept floating [...]