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Easy
Question
A ball moves over a fixed track as shown in the figure. From A to B the ball rolls without slipping. Surface BC is frictionless. KA, KB and KC are kinetic energies of the ball at A, B and C, respectively. Then
The correct answer is:
Related Questions to study
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A disc has mass 9m. A hole of radius 
is cut from it as shown in the figure. The moment of inertia of remaining part about an axis passing through the centre 'O' of the disc and perpendicular to the plane of the disc is:
A disc has mass 9m. A hole of radius is cut from it as shown in the figure. The moment of inertia of remaining part about an axis passing through the centre 'O' of the disc and perpendicular to the plane of the disc is:
physics-General
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A block of mass m is held fixed against a wall by a applying a horizontal force F. Which of the following option is incorrect?
A block of mass m is held fixed against a wall by a applying a horizontal force F. Which of the following option is incorrect?
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A disc is rolling (without slipping) on a horizontal surface. C is its center and Q and P are two points equidistant from C. Let VP, VQ and VC be the magnitude of velocities of points P, Q and C respectively, then
A disc is rolling (without slipping) on a horizontal surface. C is its center and Q and P are two points equidistant from C. Let VP, VQ and VC be the magnitude of velocities of points P, Q and C respectively, then
physics-General
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Two particles each of mass M are connected by a massless rod of length l. The rod is lying on the smooth sufrace. If one of the particle is given an impulse MV as shown in the figure then angular velocity of the rod would be
Two particles each of mass M are connected by a massless rod of length l. The rod is lying on the smooth sufrace. If one of the particle is given an impulse MV as shown in the figure then angular velocity of the rod would be
physics-General
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One quarter sector is cut from a uniform circular disc of radius R. This sector has mass M. It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation is
One quarter sector is cut from a uniform circular disc of radius R. This sector has mass M. It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation is
physics-General
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An equilateral triangle ABC formed from a uniform wire has two small identical beads initially located at AO. Then, the beads are released from rest simultaneously and allowed to slide down, one along AB and the other AC as shown. Neglecting frictional effects, the quantities that are conserved as the beads slide down, are:
An equilateral triangle ABC formed from a uniform wire has two small identical beads initially located at AO. Then, the beads are released from rest simultaneously and allowed to slide down, one along AB and the other AC as shown. Neglecting frictional effects, the quantities that are conserved as the beads slide down, are:
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A thin wire of length L and uniform linear mass density 
is bent into a circular loop with centre at O as shown. The moment of inertia of the loop about the axis XX’ is:
A thin wire of length L and uniform linear mass density is bent into a circular loop with centre at O as shown. The moment of inertia of the loop about the axis XX’ is:
physics-General
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A cubical block of side L rests on a rough horizontal surface with coefficient of friction 
. A horizontal force F is applied on the block as shown. If the coefficient of friction is sufficiently high so that the block does not slide before toppling, the minimum force required to topple the block is:
A cubical block of side L rests on a rough horizontal surface with coefficient of friction . A horizontal force F is applied on the block as shown. If the coefficient of friction is sufficiently high so that the block does not slide before toppling, the minimum force required to topple the block is:
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A disc of mass M and radius R is rolling with angular speed w on a horizontal as shown. The magnitude of angular momentum of the disc about the origin O is:
A disc of mass M and radius R is rolling with angular speed w on a horizontal as shown. The magnitude of angular momentum of the disc about the origin O is:
physics-General
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A smooth sphere A is moving on a frictionless horizontal plane with angular speed 
and centre of mass velocity v. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angularspeeds are ) 
, respectively. Then
A smooth sphere A is moving on a frictionless horizontal plane with angular speed and centre of mass velocity v. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angularspeeds are ) , respectively. Then
physics-General
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A cubical block of side a is moving with velocity v on a horizontal smooth plane as shown. It hits a ridge at point O. The angular speed of the block after it hits O is:
A cubical block of side a is moving with velocity v on a horizontal smooth plane as shown. It hits a ridge at point O. The angular speed of the block after it hits O is:
physics-General
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In a region of only gravitational field of mass 'M' a particle is shifted from A to B via three different paths in the figure. The work done in different paths are W1, W2, W3 respectively then
In a region of only gravitational field of mass 'M' a particle is shifted from A to B via three different paths in the figure. The work done in different paths are W1, W2, W3 respectively then
physics-General
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A simple pendulum is oscillating without damping. When the displacement of the bob is less that maximum, its acceleration vector 
is correctly shown in
A simple pendulum is oscillating without damping. When the displacement of the bob is less that maximum, its acceleration vector is correctly shown in
physics-General
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An insect crawls up a hemispherical surface very slowly (see the figure). The coefficient of friction between the insect and the surface is 1/3. If the line joining the centre of the hemispherical surface to the insect makes an angle a with the vertical, the maximum possible value of 
is given by
An insect crawls up a hemispherical surface very slowly (see the figure). The coefficient of friction between the insect and the surface is 1/3. If the line joining the centre of the hemispherical surface to the insect makes an angle a with the vertical, the maximum possible value of is given by
physics-General
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Two blocks A and B of masses 2m and m, respectively, are connected by a massless and inextensible string The whole system is suspended by a massless spring as shown in the figure The magnitudes of acceleration of A and B, immediately after the string is cut, are respectively
Two blocks A and B of masses 2m and m, respectively, are connected by a massless and inextensible string The whole system is suspended by a massless spring as shown in the figure The magnitudes of acceleration of A and B, immediately after the string is cut, are respectively
physics-General
