Q. A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)

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Q. If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

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Q. The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

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Q. The centre of gravity of an equilateral triangle with each side a, is __________ from any of the three sides.

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Q. The distance, between the point of projection and the point where the projectile strikes the ground, is known as range.

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Q. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

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Q. The triangle law of forces states that if two forces acting simultaneously on a particle, be represented in magnitude and direction by the two sides of a triangle taken in order, then their resultant may be represented in magnitude and direction by the third side of a triangle, taken in opposite order.

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Q. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is

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Q. Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

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Q. If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that

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Q. A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.

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Q. When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

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Q. If two blocks of equal mass are attached to the two ends of a light string and one of the blocks is placed over a smooth horizontal plane while the other is hung freely after passing over a smooth pulley, then the two blocks will have some motion.

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Q. During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

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Q. The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

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Q. The total time taken by a projectile to reach maximum height and to return back to the ground, is known as time of flight.

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Q. The frequency of oscillation of a torsional pendulum is

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Q. The range of a projectile is maximum, when the angle of projection is

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Q. According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

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Q. The friction experienced by a body, when in motion, is known as

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