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A particle is moving along a straight line with increasing speed. Its angular momentum about a fixed point on this line:
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Important Questions on System of Particles and Rotational Motion
MEDIUM
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When a body is spinning on its axis in absence of any external torque, then choose the wrong statement
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Two discs having masses in the ratio and radii in the ratio roll down without slipping one by one from an inclined plane of height . The ratio of their linear velocities on reaching the ground is
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Which of the following (if mass and radius are assumed to be same) have maximum percentage of total in rotational form while pure rolling?
HARD
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A solid cylinder of mass and radius rolls down an inclined plane of height . The angular velocity of the cylinder when it reaches the bottom of the plane is:
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If radius of earth becomes times its present value, without change in mass, then duration of day becomes
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Due to global warming, ice on polar caps is likely to melt in larger quantity. Due to this effect
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Fly-wheel is used with an engine because it
MEDIUM
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Different minerals are being mined from within the earth and multi-storeyed complexes are being constructed. Due to this activity theoretically
