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Three identical rods each of length L and mass m are joined to form a U-shape as shown in figure. The distance of centre of mass of the combined system from the corner ' O ' is
The correct answer is:
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The co-ordinates of the centre of mass of the system as shown in figure are
The co-ordinates of the centre of mass of the system as shown in figure are
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A thin uniform rod of length L is bent at its mid point as shown in the figure. The distance of centre of mass form the point ' O ' is
A thin uniform rod of length L is bent at its mid point as shown in the figure. The distance of centre of mass form the point ' O ' is
physics-General
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Four particles of masses 2,2,4,4 kg are arranged at the corners A, B, C, D of a square ABCD of side 2m as shown in the figure. The perpendicular distance of their centre of mass from the side AB is,
Four particles of masses 2,2,4,4 kg are arranged at the corners A, B, C, D of a square ABCD of side 2m as shown in the figure. The perpendicular distance of their centre of mass from the side AB is,
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Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, 
is of mass 3m. The spheres are projected towards each other with velocity vectors 
and 
respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is 
The magnitude of the impulse that act at the instant of impact is.
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is The magnitude of the impulse that act at the instant of impact is.
physics-General
physics-
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is The loss in kinetic energy caused by the collision is.
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is The loss in kinetic energy caused by the collision is.
physics-General
physics-
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors 
and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is Their velocities after impact are
Two smooth spheres, A&B, of equal radius, lie on a horizontal table. A is of mass m, is of mass 3m. The spheres are projected towards each other with velocity vectors and respectively & when they collide the line joining their centres is parallel to the vector i. If the coefficient of restitution between A and B is Their velocities after impact are
physics-General
physics-
A chain of length L and mass per unit length r is pilled on a horizontal surface. One end of the chain lifted vertically with a constant velocity v by a variable force P. What are
A) P as a function of the height x of the end above the surface ?
B) the energy lost during the lifting of the chain ?
A chain of length L and mass per unit length r is pilled on a horizontal surface. One end of the chain lifted vertically with a constant velocity v by a variable force P. What are
A) P as a function of the height x of the end above the surface ?
B) the energy lost during the lifting of the chain ?
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A pile of loose-link chain; mass per unit length 
lies on a rough horizontal surface with Coeff of friction 
. One end of the chain is being pulled horizontally by a constant force P. Determine the acceleration of chain
A pile of loose-link chain; mass per unit length lies on a rough horizontal surface with Coeff of friction . One end of the chain is being pulled horizontally by a constant force P. Determine the acceleration of chain
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physics-
A ball is projected from the point O with velocity 20 m/s at an angle of 60° with horizontal as shown in figure. At highest point of its trajectory it strikes a smooth plane of inclination 30° at point A. The collision is perfectly inelastic. The maximum height from the ground attained by the ball is 
A ball is projected from the point O with velocity 20 m/s at an angle of 60° with horizontal as shown in figure. At highest point of its trajectory it strikes a smooth plane of inclination 30° at point A. The collision is perfectly inelastic. The maximum height from the ground attained by the ball is
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A particle of mass 1g moving with a velocity 
experiences a perfectly inelastic collision with another particle of mass 2g and velocity 
.The velocity of the combined particle is
A particle of mass 1g moving with a velocity experiences a perfectly inelastic collision with another particle of mass 2g and velocity .The velocity of the combined particle is
physics-General
physics-
Two identical balls A and B lie on a smooth horizontal surface, which gradually merges into a curve to a height 3.2 m. Ball A is given a velocity 10 m/sec to collide head on with ball B, which then takes up the curved path. The minimum coefficient of Restitution 'e' for the collision between A and B, in order that B reaches the highest point C of curve. 
Two identical balls A and B lie on a smooth horizontal surface, which gradually merges into a curve to a height 3.2 m. Ball A is given a velocity 10 m/sec to collide head on with ball B, which then takes up the curved path. The minimum coefficient of Restitution 'e' for the collision between A and B, in order that B reaches the highest point C of curve.
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physics-
To test the manufactured properties of 10 N steel balls, each ball is released from rest as shown and strikes a 45° inclined surface. If the coefficient of restitution is to be e=0.8, the distance s to where the ball must strike the horizontal plane at A is.
To test the manufactured properties of 10 N steel balls, each ball is released from rest as shown and strikes a 45° inclined surface. If the coefficient of restitution is to be e=0.8, the distance s to where the ball must strike the horizontal plane at A is.
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physics-
A body is hanging from a rigid support by an inextensible string of length. It is struck inelastically by an identical body of mass 
with horizontal velocity 
, the tension in the string increases just after striking by
A body is hanging from a rigid support by an inextensible string of length. It is struck inelastically by an identical body of mass with horizontal velocity , the tension in the string increases just after striking by
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Two identical balls A and B are released from the positions shown in figure. They collide elastically on horizontal portion MN. The ratio of heights attained by A and B after collision will be (neglect friction)
Two identical balls A and B are released from the positions shown in figure. They collide elastically on horizontal portion MN. The ratio of heights attained by A and B after collision will be (neglect friction)
physics-General
physics-
Two masses 2 m and are connected by an inextensible light string. The string is passing over a light frictionless pulley. The mass 2 m is resting on a surface and mass m is hanging in air as shown in Fig. A particle of mass m strikes the mass from below in case (1) with a velocity 
and in case (II) strikes the mass m with a velocity from top and sticks to it.
Two masses 2 m and are connected by an inextensible light string. The string is passing over a light frictionless pulley. The mass 2 m is resting on a surface and mass m is hanging in air as shown in Fig. A particle of mass m strikes the mass from below in case (1) with a velocity and in case (II) strikes the mass m with a velocity from top and sticks to it.
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