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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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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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The force of gravitation

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Newton’s law of gravitation is universal

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Two sphere of masses `m and M` are situated in air and the gravitational force between them is `F` . The space around the masses is now filled with a liquid of specific gravity. The gravitational force will now

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

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A mass of 1g is separated from another mass of 1g by a distance of 1 cm. How many force (in g-wt) exists between

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If the distance between the sun and the earth is increased by three times, then attraction between two

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If the gravitation force on body 1 due to 2 is given by `F_(12)` and on body 2 due to 1 is given as `F_(21)`,

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

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Two equal point masses are separated by a distance `d_1`. The force of gravitation acting between them is `F_1`. If the separation is decreased to `d_2`, then the new force of gravitation `F_2` , is given

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

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