Q. The centre of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

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Q. The process of finding out the resultant force is called __________ of forces.

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Q. A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is

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Q. The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

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Q. The centre of gravity of an is osceles triangle with base (p) and sides (q) from its base is

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Q. A newton is defined as the force while acting upon a mass of one kg, produces an acceleration of 1 m / s² in the direction of which it acts.

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Q. The acceleration of a particle moving with simple harmonic motion, at any instant is given by

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Q. The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

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Q. The principle of transmissibility of forces states that, when a force acts upon a body, its effect is

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Q. A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

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Q. If three forces acting at a point are represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are in equilibrium.

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Q. Newton's second law motion __________ a relation between force and mass of a moving body.

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Q. The periodic time of one oscillation for a simple pendulum is(where l = Length of the pendulum.)

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Q. The resultant of two forces P and Q acting at an angle θ is

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Q. Which of the following are vector quantities?

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

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Q. A lift moves downwards with an acceleration of 9.8 m/s². The pressure exerted by a man on the floor of the lift is zero.

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Q. Non-coplaner concurrent forces are those forces which

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Q. Which of the following statement is correct?

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Q. The maximum efficiency of a screw jack is

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