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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

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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

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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)`,

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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

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Two particles of equal masses go round a circle of radius R under the action of their mutual gravitational attraction. The speed `v` of each particle

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A point mass `m` is placed outside a hollow spherical shell of mass `M` and uniform density at a distance `d` from centre of the sphere as shown in figure. Gravitational force on point mass `m` at `P`

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Three equal masses of 2 kg each are placed at the vertices of an equilateral triangle and a mass of 4 kg is placed at the centroid of the triangle which is at a distance of `sqrt2 m` from each of the vertices of the triangle. The force (in newton) acting on the mass of 4 kg

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During the free fall of an

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What will happen to the weight of the body at the south-pole, if the earth stops rotating about its polar

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If `G` is universal gravitational constant and `g` is acceleration due to gravity, then the unit of the quantity `G/g`

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The height at which the weight of a body becomes 1/16th of its weight, on the surface of the earth (radius R),

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The radius of earth is R. Height of a point vertically above the earth’s surface at which acceleration due to gravity becomes 1% of its value at the surface

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What will be the value of g at the bottom of sea 7 km deep? Diameter of the earth is 12800 km and gon the surface of the earth is `9.8

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Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by which of the following option

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Dependence of intensity of gravitational field `(E)` of earth with distance `(r)` from centre of earth is correctly represented

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A thin rod of length `L` is bent to form a semicircle. The mass of rod is `M`. What will be the gravitational potential at the centre of the

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