A glass ball collides with a smooth horizontal surface (xz plane) with a velocity V=ai-bj. If the coefficient of restitution of collision be e
Sahay Sir > Question Answers > A glass ball collides with a smooth horizontal surface (xz plane) with a velocity V=ai-bj. If the coefficient of restitution of collision be e
A smooth sphere A of mass m collides elasticity with an identical sphereB at rest. The velocity of A before collision is 10 m/s in a direction making 60 degree with the lines of centres at the time of impact.
24
Sep
A smooth sphere A of mass m collides elasticity with an identical sphereB at rest. The velocity of A before collision is 10 m/s in a direction making 60 degree with the lines of centres at the time of impact. A glass ball collides with a smooth horizontal surface (xz plane) with a velocity V=ai-bj. [...]
The wall is at extreme right is fixed as shown in figutre Coefficient of restiitution for collision between two balls is 1/2 and between ball and wall is 1 . Then speed of A and B after all posible collisions are
24
Sep
The wall is at extreme right is fixed as shown in figutre Coefficient of restiitution for collision between two balls is 1/2 and between ball and wall is 1 . Then speed of A and B after all posible collisions are A glass ball collides with a smooth horizontal surface (xz plane) with a velocity [...]
Two blocks A and B of masses m and 2m respectively are placed on a smooth floor. They are connected by a spring. A third block C of mass m moves with a velocity v0 along the line joing A and B and collides elastically with A, as shown in figure. At a certain instant of time t0 after collision, it is found that the instantaneous velocities of A and B are the same.
24
Sep
Two blocks A and B of masses m and 2m respectively are placed on a smooth floor. They are connected by a spring. A third block C of mass m moves with a velocity v0 along the line joing A and B and collides elastically with A, as shown in figure. At a certain instant [...]
A string of length 3 l is connected to a fixed cylinder whose top view is shown in Fig. The string is initially slack. The other end of the string (connected to a marble) is moving at a constant velocity of 10m/s as shown. The string will get stretched at some instant and impulsive tension occurs in the string. If hinge is exerting a force of 40000N for 0.25ms on the cylinder to bear up the impact of impulsive tension, then mark the correct statements. (Take string to be light, breaking tension of the string is 2 x 10^5 N)
24
Sep
A string of length 3 l is connected to a fixed cylinder whose top view is shown in Fig. The string is initially slack. The other end of the string (connected to a marble) is moving at a constant velocity of 10m/s as shown. The string will get stretched at some instant and impulsive tension [...]
Two particles of masses m1 and m2 and velocities u1 and αu1 ( α≠0) make an elastic head on collision. If the initial kinetic energies of the two particles are equal and m1 comes to rest after collision, then
24
Sep
Two particles of masses m1 and m2 and velocities u1 and αu1 ( α≠0) make an elastic head on collision. If the initial kinetic energies of the two particles are equal and m1 comes to rest after collision, then A glass ball collides with a smooth horizontal surface (xz plane) with a velocity V=ai-bj. If [...]
Two masses 2m and m are connected by an inextensible light string. The string is passing over a light frictionless pulley. The mass 2m is resting on a surface and mass in is hanging in air as shown in Fig. A particle of mass in strikes the mass in from below in case (I) with a velocity v0 and in case (II) strikes mass in with a velocity v0 from top and sticks to it.
24
Sep
Two masses 2m and m are connected by an inextensible light string. The string is passing over a light frictionless pulley. The mass 2m is resting on a surface and mass in is hanging in air as shown in Fig. A particle of mass in strikes the mass in from below in case (I) with [...]
A block of mass ‘m’ is hanging from a massless spring of spring constant K. It is in equilibrium under the influence of gravitational force. Another particle of same mass ‘m’ moving upwards with velocity ao hits the block and sticks to it. For the subsequent motion, choose the incorrect statements:
24
Sep
A block of mass ‘m’ is hanging from a massless spring of spring constant K. It is in equilibrium under the influence of gravitational force. Another particle of same mass ‘m’ moving upwards with velocity ao hits the block and sticks to it. For the subsequent motion, choose the incorrect statements: A glass ball collides [...]
A small ball is projected horizontally between two large blocks. The ball is given a velocity V m/s and each of the large blocks move uniformly with a velocity of 2 V m/s. The ball collides elastically with the blocks. If the velocity of the blocks do not change due to the collision, then find out the velocity of the ball after the 2nd collision.
24
Sep
A small ball is projected horizontally between two large blocks. The ball is given a velocity V m/s and each of the large blocks move uniformly with a velocity of 2 V m/s. The ball collides elastically with the blocks. If the velocity of the blocks do not change due to the collision, then find [...]
A bullet of mass 0.01 kg and travelling at a speed of 500 m/s strikes a block of mass 2 kg which is suspended by a string of length 5m. The centre of gravity of the block is found to raise a vertical distance of 0.2 m. What is the speed of the bullet after it emerges from the block?
24
Sep
A bullet of mass 0.01 kg and travelling at a speed of 500 m/s strikes a block of mass 2 kg which is suspended by a string of length 5m. The centre of gravity of the block is found to raise a vertical distance of 0.2 m. What is the speed of the bullet after [...]
A steel ball of mass 0.5 kg is fastened to a cord 20 cm long and fixed at the far end and is released when the cord is horizontal. At the bottom of its path the ball strikes a 2.5 kg steel block initially at rest on a frictionless surface. The collision is elastic. The speed of the block just after the collision will be.
24
Sep
A steel ball of mass 0.5 kg is fastened to a cord 20 cm long and fixed at the far end and is released when the cord is horizontal. At the bottom of its path the ball strikes a 2.5 kg steel block initially at rest on a frictionless surface. The collision is elastic. The [...]