Q. If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.

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Q. The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is

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Q. The linear velocity of a body rotating at ω rad / s along a circular path of radius r is given by

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Q. A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.

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Q. The centre of gravity of a right angled triangle lies at its geometrical centre.

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Q. Vectors method for the resultant force is also called polygon law of forces.

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Q. Two equal and opposite parallel forces whose lines of action are different form a couple.

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Q. When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

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Q. The maximum velocity of a particle moving with simple harmonic motion is

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Q. The loss of kinetic energy due to direct impact of two bodies __________ upon the value of coefficient of restitution.

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Q. A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

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Q. The unit of power in S.I. units is

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Q. The velocity ratio for the second system of pulleys is n.

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Q. The law of motion involved in the recoil of gun is

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Q. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.

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Q. A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

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Q. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

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Q. The forces, which meet at one point and their lines of action also lie on the same plane, are known as

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Q. The amount by which the outer edge of the rail is raised, is known as super-elevation.

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Q. The unit of energy in S.I. units is

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