Q. The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ .

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Q. Which of the following is a scalar quantity?

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Q. The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

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Q. In ideal machines, mechanical advantage is __________ velocity ratio.

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Q. The minimum force required to slide a body of weight W on a rough horizontal plane is

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Q. The moment of inertia of a square of side a about its diagonal is

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Q. The angular velocity (in rad / s) of a body rotating at N revolutions per minute is

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Q. The maximum efficiency of a lifting machine is

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Q. A machine having an efficiency less than 50%, is known as

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Q. The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called

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Q. The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

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Q. The unit of mass moment of inertia in S.I. units is kg-m².

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Q. The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is

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Q. In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

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Q. The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning.

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Q. A couple produces

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Q. Energy may be defined as the capacity of doing work.

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Q. An irregular body may have more than one centre of gravity.

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Q. The rate of doing work is known as

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Q. In a wormed geared pulley block, if the number of teeth on the worm wheel is doubled, then its velocity ratio is also doubled.

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