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Assertion: Two identical spherical spheres are half filled with two liquids of densities `rho_1 and rho_2 ( > rho_1)`. The centre of mass of both the spheres lie at same level.Reason: The centre of mass does not lie at centre of the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: If a particle moves with a constant velocity, then angular momentum of this particle about any point remains constant. Reason: Angular momentum does not have the units of Planck’s

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: When a particle is moving in a straight line with a uniform velocity, its angular momentum is constant. Reason: The angular momentum is non-zero, when particle moves with a uniform

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: For a system of particles under central force field, the total angular momentum is conserved. Reason: The torque acting on such a system is

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: Inertia and moment of inertia are not same quantities. Reason: Inertia represents the capacity of a body that does not oppose its state of motion or

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: Moment of inertia of a particle is different whatever be the axis of rotation. Reason: Moment of inertia does not depends on mass and distance of the particle from the axis of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: The angular velocity of a rigid body in motion is defined for the whole body. Reason: All points on a rigid body performing pure rotational motion are having same angular

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: If bodies slide down an inclined plane without rolling, then all bodies reach the bottom simultaneously is not necessary. Reason: Acceleration of all bodies are equal and independent of the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: A solid sphere cannot roll without slipping on smooth horizontal surface. Reason: If the sphere is left free on smooth inclined surface, it can roll without

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: The work done against force of friction in the case of a disc rolling without slipping down an inclined plane is zero. Reason: When the disc rolls without slipping, friction is required because for rolling condition velocity of point of contact is

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Centre of Mass The centre of mass of a body or a system of bodies is the point which moves as though all of the mass were concentrated there and all external forces were applied to it. Hence, a point at which the entire mass of the body or system of bodies is supposed to be concentrated is known as the centre of mass. If a system consists of more than one particles (or bodies) and net external force on the system in a particular direction is zero with centre of mass at rest. Then, the centre of mass will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Centre of Mass The centre of mass of a body or a system of bodies is the point which moves as though all of the mass were concentrated there and all external forces were applied to it. Hence, a point at which the entire mass of the body or system of bodies is supposed to be concentrated is known as the centre of mass. If a system consists of more than one particles (or bodies) and net external force on the system in a particular direction is zero with centre of mass at rest. Then, the centre of mass will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Centre of Mass The centre of mass of a body or a system of bodies is the point which moves as though all of the mass were concentrated there and all external forces were applied to it. Hence, a point at which the entire mass of the body or system of bodies is supposed to be concentrated is known as the centre of mass. If a system consists of more than one particles (or bodies) and net external force on the system in a particular direction is zero with centre of mass at rest. Then, the centre of mass will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Centre of Mass The centre of mass of a body or a system of bodies is the point which moves as though all of the mass were concentrated there and all external forces were applied to it. Hence, a point at which the entire mass of the body or system of bodies is supposed to be concentrated is known as the centre of mass. If a system consists of more than one particles (or bodies) and net external force on the system in a particular direction is zero with centre of mass at rest. Then, the centre of mass will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Centre of Mass The centre of mass of a body or a system of bodies is the point which moves as though all of the mass were concentrated there and all external forces were applied to it. Hence, a point at which the entire mass of the body or system of bodies is supposed to be concentrated is known as the centre of mass. If a system consists of more than one particles (or bodies) and net external force on the system in a particular direction is zero with centre of mass at rest. Then, the centre of mass will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Torque and Centre of GravityTorque is also known as moment of force or couple. When a force acts on a particle, the particle does not merely move in the direction of the force but it also turns about some point. So, we can define the torque for a particle about a point as the vector product of position vector of the point where the force acts and with the force itself. In the given figure, balancing of a cardboard on the tip of a pencil is done. The point of support, G is the centre of gravity.If the `F_(net.ext)`. is

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Torque and Centre of GravityTorque is also known as moment of force or couple. When a force acts on a particle, the particle does not merely move in the direction of the force but it also turns about some point. So, we can define the torque for a particle about a point as the vector product of position vector of the point where the force acts and with the force itself. In the given figure, balancing of a cardboard on the tip of a pencil is done. The point of support, G is the centre of gravity.Choose the correct

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Torque and Centre of GravityTorque is also known as moment of force or couple. When a force acts on a particle, the particle does not merely move in the direction of the force but it also turns about some point. So, we can define the torque for a particle about a point as the vector product of position vector of the point where the force acts and with the force itself. In the given figure, balancing of a cardboard on the tip of a pencil is done. The point of support, G is the centre of gravity.The centre of gravity

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Torque and Centre of GravityTorque is also known as moment of force or couple. When a force acts on a particle, the particle does not merely move in the direction of the force but it also turns about some point. So, we can define the torque for a particle about a point as the vector product of position vector of the point where the force acts and with the force itself. In the given figure, balancing of a cardboard on the tip of a pencil is done. The point of support, G is the centre of gravity.If value of `g`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Torque and Centre of GravityTorque is also known as moment of force or couple. When a force acts on a particle, the particle does not merely move in the direction of the force but it also turns about some point. So, we can define the torque for a particle about a point as the vector product of position vector of the point where the force acts and with the force itself. In the given figure, balancing of a cardboard on the tip of a pencil is done. The point of support, G is the centre of gravity.A body lying in

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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