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1 Pick up the correct statement from the following :
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Slacking of lime is affected by
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The commonly used lime in white-washing, is
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For the manufacture of Portland cement, the proportions of raw materials used, are
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Good quality cement contains higher percentage of
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1. A retarding force on a body does not
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The force acting on a point on the surface of a rigid body may be considered to act
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Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
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The resultant of two forces P and Q acting at an angle 0, is
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If the resultant of two forces P and Q acting at an angle 0 makes an angle a with P, then tan a equals P sin 0 Q sin 0
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If two equal forces of magnitude P act at an angle 0, their resultant, will be
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Lami's theroem states that
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Principle of Transmissibility of Forces states that, when a force acts upon a body, its effect is
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According to Law of Triangle of Forces
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A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if
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A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60? with horizontal, is
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The centre of gravity of a homogenous body is the point at which the whole