Arihant Physics by D.C Pandey
A disc is performing pure rolling on a smooth stationary surface with constant angular velocity as shown figure. At any instant, for the lower most point of the disc,
26
Nov
A disc is performing pure rolling on a smooth stationary surface with constant angular velocity as shown figure. At any instant, for the lower most point of the disc, A disc is performing pure rolling on a smooth stationary surface with constant angular velocity as shown figure. At any instant for the lower most point [...]
A plank P is placed on a solid cylinder S, which rolls on a horizontal surface. The two are of equal mass. There is no slipping at any of the surfaces in contact. The ratio of kinetic energy of P to the kinetic energy of S is
26
Nov
A plank P is placed on a solid cylinder S, which rolls on a horizontal surface. The two are of equal mass. There is no slipping at any of the surfaces in contact. The ratio of kinetic energy of P to the kinetic energy of S is A plank P is placed on a solid [...]
A uniform rod of mass 20 kg and length 1.6 m is pivoted at its end and swings freely in the vertical plane. Angular acceleration of rod just after the rod is released from rest in the horizontal position is:
26
Nov
A uniform rod of mass 20 kg and length 1.6 m is pivoted at its end and swings freely in the vertical plane. Angular acceleration of rod just after the rod is released from rest in the horizontal position is: A ball of mass m moving vertically down collides with inclined surface of the wedge [...]
A rod of weight W is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction at A and B are
26
Nov
A rod of weight W is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction at A and B are A [...]
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
26
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 [...]