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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Q. The angle of friction is :

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Q. The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60°, it is √37 kgf. The magnitudes of the forces are :

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Q. The motion of a particle is described by the relation x = t²- 10t + 30, where x is in metres and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be

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Q. Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and

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Q. For perfectly elastic bodies, the value of coefficient of restitution is

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Q. A trolley wire weighs 1 kg per metre length. The ends of the wire are attached to two poles 20 m apart. If the horizontal tension is 1000 kg, the central dip of the cable is

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Q. Principle of Transmissibility of Forces states that, when a force acts upon a body, its effect is

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Q. A ball is dropped from a height of 2.25 m on a smooth floor and rises to a height of 1.00 m after the bounce. The coefficient of restitution between the ball and the floor is

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Q. If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be

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Q. The acceleration of a train starting from rest at any instant is 1/6(V+1) m/sec² where V is the velocity of the train in m/sec. The train will attain a velocity of 36 km/hour after travelling a distance of

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