Chapter 8 – COM, Momentum and Collision
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 8 - COM, Momentum and Collision
A ball of mass m moving vertically down , collides with inclined surface of the wedge . After the collision , wedge starts moving in horizontal direction with velocity v0 . If all the surfaces are smooth then impulse applied by wedge on the ball during collision is given by
26
Nov
A ball of mass m moving vertically down , collides with inclined surface of the wedge . After the collision , wedge starts moving in horizontal direction with velocity v0 . If all the surfaces are smooth then impulse applied by wedge on the ball during collision is given by A ball of mass m [...]
A smooth sphere is moving on a horizontal surface with velocity vector 2i +2j immediately before it hits a vertical wall. The wall is parallel to j vector and the coefficient of restitution between the sphere and the wall is e=1/2. The velocity vector of the sphere after it hits the wall is
26
Nov
A smooth sphere is moving on a horizontal surface with velocity vector 2i +2j immediately before it hits a vertical wall. The wall is parallel to j vector and the coefficient of restitution between the sphere and the wall is e=1/2. The velocity vector of the sphere after it hits the wall is [...]
A boy of mass 60 kg is standing over a platform of mass 40 kg placed over a smooth horizontal surface. He throws a stone of mass 1 kg with velocity v=10 m/s at an angle 450 with respect to the ground.Find the displacement of the platform (with boy) on the horizontal surface when the stone lands on the ground. (g=10m/s2)
26
Nov
A boy of mass 60 kg is standing over a platform of mass 40 kg placed over a smooth horizontal surface. He throws a stone of mass 1 kg with velocity v=10 m/s at an angle 450 with respect to the ground.Find the displacement of the platform (with boy) on the horizontal surface when the [...]
Two blocks of masses 2kg and 1kg respectively are tied to the ends of a string which passes over a light frictionless pulley. The masses are held at rest at the same horizontal level and then released. The distance traversed by the centre of mass in 2s is : (g=10m/s2)
26
Nov
Two blocks of masses 2kg and 1kg respectively are tied to the ends of a string which passes over a light frictionless pulley. The masses are held at rest at the same horizontal level and then released. The distance traversed by the centre of mass in 2s is : (g=10m/s2) A metre rule weighing 100 [...]
A man of mass m moves with a constant speed on a plank of mass M and length l kept initially at rest on a frictionless horizontal surface, from one end to the other in time t. The speed of the plank relative to ground while man is moving, is
26
Nov
A man of mass m moves with a constant speed on a plank of mass M and length l kept initially at rest on a frictionless horizontal surface, from one end to the other in time t. The speed of the plank relative to ground while man is moving, is A man of mass m [...]
A ball strikes a horizontal floor at an angle θ=45o. The coefficient of restitution between the ball and the floor is e=21. The fraction of its kinetic energy lost in collision is
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Nov
A ball strikes a horizontal floor at an angle θ=45o. The coefficient of restitution between the ball and the floor is e=21. The fraction of its kinetic energy lost in collision is A ball strikes a horizontal floor at an angle θ=45o. The coefficient of restitution between the ball and the floor is e=21. The [...]
Two billiard balls of same size and mass are in contact on a billiard table. A third ball of same mass and size strikes them symmetrically and remains at rest after the impact. Find the coefficient of restitution between the balls is
26
Nov
Two billiard balls of same size and mass are in contact on a billiard table. A third ball of same mass and size strikes them symmetrically and remains at rest after the impact. Find the coefficient of restitution between the balls is A metre rule weighing 100 g rests on a table with a part [...]
Two smooth objects with a coefficient of restitution e, collides directly and bounce as shown Newton’s law of restitution gives
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Nov
Two smooth objects with a coefficient of restitution e, collides directly and bounce as shown Newton’s law of restitution gives collides directly and bounce as shown Newton's law of restitution gives Two smooth objects with a coefficient of restitution e November 26, 2020 Category: Arihant Physics by D.C Pandey , Chapter 8 - COM, Momentum [...]
A man of mass 80 kg is riding on a small cart of mass 40 kg which is rolling along a level floor at a speed 2 m/s . He is running on the cart , so that his velocity relative to the cart is 3 m/s in the direction opposite to the motion of cart . What is the speed of the centre of the mass of the system ?
26
Nov
A man of mass 80 kg is riding on a small cart of mass 40 kg which is rolling along a level floor at a speed 2 m/s . He is running on the cart , so that his velocity relative to the cart is 3 m/s in the direction opposite to the motion of [...]
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A man of mass 80 kg is riding on a small cart of mass 40 kg which is rolling along a level floor at a speed 2 m/s . He is running on the cart ,
so that his velocity relative to the cart is 3 m/s in the direction opposite to the motion of cart . What is the speed of the centre of the mass of the system ? ,
Mass is non – uniformly distributed on the circumference of a ring of radius a and centre at origin . Let b be the distance of centre of the ring from origin. Then ,
26
Nov
Mass is non – uniformly distributed on the circumference of a ring of radius a and centre at origin . Let b be the distance of centre of the ring from origin. Then , Mass is non - uniformly distributed on the circumference of a ring of radius a and centre at origin . Let [...]