Q. Power can be expressed as

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Q. A spring scale in a stationary lift shows a reading of 60 kg for a man standing on it. If the lift starts descending at an acceleration of g/5, the scale reading would be

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Q. The resolved part of the resultant of two forces inclined at an angle θ in a given direction is

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Q. The following statement is one of the laws of Dynamic friction

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Q. A 50 kg boy climbs up a 8 m rope in gymnasiam in 10 sec. The average power developed by the boy is approximately

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Q. According to Law of Triangle of Forces

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Q. A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

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Q. The following is not a law of static friction :

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Q. The velocity of a moving body, is

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Q. The resultant of the forces acting on a body will be zero if the body

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Q. A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

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Q. A pilot flies a small plane in a vertical loop of radius r. At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is g, the speed of the plane at the top of its trajectory would be

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Q. A Seconds pendulum executes

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Q. The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface

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Q. Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

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Q. Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of

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Q. A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is

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Q. For maximum range of a projectile, the angle of projection should be

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Q. A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec². Time required to traverse a distance of 1.5 m, is

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Q. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The velocity ratio of the lifting machine is

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