Q. The centre of percussion is below the centre of gravity of the body and is at a distance equal to

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Q. If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.

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Q. The forces, which do not meet at one point, but their lines of action lie on the same plane, are known as coplaner non-concurrent forces.

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

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Q. Moment of inertia is the

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Q. The coefficient of restitution for inelastic bodies is

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Q. When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ proportional to its acceleration.

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Q. The term 'centroid' is

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Q. Two forces are acting at an angle of 120°. The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is

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Q. The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is

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Q. In order to completely specify angular displacement by a vector, it must fix

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Q. Which of the following statement is correct in connection with projectiles?

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Q. The acceleration of a body sliding down an inclined surface is

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Q. If a body is acted upon by a number of coplaner non-concurrent forces, it may

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Q. The angle which the normal reaction makes with the resultant reaction is called angle of friction.

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Q. Which of the following statement is correct?

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Q. The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

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Q. The velocity of a body on reaching the ground from a height h, is

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Q. The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

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Q. The unit of force in S.I. system of units is

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