Q. The mechanical advantage of a lifting machine is the ratio of

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Q. Static friction is always __________ dynamic friction.

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Q. A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.

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Q. When a particle moves along a circular path with uniform velocity, there will be no tangential acceleration.

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Q. The bodies which rebound after impact are called

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Q. Work done is said to be zero, when

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Q. The force which acts along the radius of a circle and directed away from the centre of the circle is called centrifugal force.

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Q. One watt is equal to

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Q. two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are

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Q. If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.

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Q. The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is

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Q. The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.

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Q. The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.

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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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