EXAMIANS
Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.)
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The point, through which the whole weight of the body acts, irrespective of its position, is known as
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The range of a projectile is maximum, when the angle of projection is
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Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity
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The unit of force in S.I. system of units is
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A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of
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One joule means that
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The unit of angular velocity is
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The forces which do not meet at one point and their lines of action do not lie on the same plane are known as
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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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