EXAMIANS
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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The efficiency of a lifting machine is the ratio of
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The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is
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When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.
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The ratio of limiting friction and normal reaction is known as
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The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is
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An ideal machine is one whose efficiency is
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The loss of kinetic energy during inelastic impact, is given by (where m1 = Mass of the first body,m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)
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If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.
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A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
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