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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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Moment of InertiaA heavy wheel called flywheel is attached to the shaft of steam engine, automobile engine etc., because of its large moment of inertia, the flywheel opposes the sudden increase or decrease of the speed of the vehicle. It allows a gradual change in the speed and prevents jerky motion and hence ensure smooth ride of passengers.Moment of inertia of a body depends

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

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Moment of InertiaA heavy wheel called flywheel is attached to the shaft of steam engine, automobile engine etc., because of its large moment of inertia, the flywheel opposes the sudden increase or decrease of the speed of the vehicle. It allows a gradual change in the speed and prevents jerky motion and hence ensure smooth ride of passengers.A particle of mass `1 kg` is kept at `(1m, 1m, 1m)`. The moment of inertia of this particle about `Z`-axis would

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

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Moment of InertiaA heavy wheel called flywheel is attached to the shaft of steam engine, automobile engine etc., because of its large moment of inertia, the flywheel opposes the sudden increase or decrease of the speed of the vehicle. It allows a gradual change in the speed and prevents jerky motion and hence ensure smooth ride of passengers.Moment of inertia of a rod of mass `m` and length `l` about its one end is `I`. If one-fourth of its length is cut away, then moment of inertia of the remaining rod about its one end will

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

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Moment of InertiaA heavy wheel called flywheel is attached to the shaft of steam engine, automobile engine etc., because of its large moment of inertia, the flywheel opposes the sudden increase or decrease of the speed of the vehicle. It allows a gradual change in the speed and prevents jerky motion and hence ensure smooth ride of passengers.A circular disc is to be made by using iron and aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It is possible

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

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Moment of InertiaA heavy wheel called flywheel is attached to the shaft of steam engine, automobile engine etc., because of its large moment of inertia, the flywheel opposes the sudden increase or decrease of the speed of the vehicle. It allows a gradual change in the speed and prevents jerky motion and hence ensure smooth ride of passengers.Three thin rods each of length L and mass M are placed along X, Y and Z -axes such that one end of each rod is at origin. The moment of inertia of this system about Z-axis

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

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Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of

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

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Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of

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

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Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of

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

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Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of

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

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