Q. Angular acceleration of a particle may be expressed as

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Q. A train weighing 196 tonnes experiences a frictional resistance of 5(11/22) per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

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Q. A stone is whirled in a vertical circle, the tension in the string, is maximum

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Q. Periodic time of body moving with simple harmonic motion, is

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Q. On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts

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Q. The centre of gravity of a plane lamina will not be at its geometrical centre if it is a

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Q. The motion of a bicycle wheel is

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Q. The displacement of a particle which moves along a straight line is given by S = 4t³ + 3t² - 10 where S is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is

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Q. Pick up the correct statement from the following. The kinetic energy of a body

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Q. The centre of gravity of a quadrant of a circle lies along its central radius at a distance of

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Q. A geo-stationary satellite is one which orbits the earth with a velocity of rotation of

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Q. The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane

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Q. A particle moving with a simple harmonic motion, attains its maximum velocity when it passes

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Q. The unit of impulse, is

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Q. The practical units of work, is

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Q. From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The c.g. of the remainder is at a height of

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Q. The unit of moments in M.K.S system, is

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Q. The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

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Q. On a mass m describing a circular path of radius r, the centrifugal force

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Q. When a body falls freely under gravitational force, it possesses

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