Q. The c.g. of a thin hollow cone of height h, above its base lies on the axis, at a height of

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Q. Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

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Q. The C.G. of a right circular cone lies on its axis of symmetry at a height of

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Q. A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is

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Q. If a particle is projected inside a horizontal tunnel which is 554 cm high with a velocity of 60 m per sec, the angle of projection for maximum range, is

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Q. A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be

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Q. A particle moves along a straight line such that distance x traversed in t seconds is given by x = t²(t + 1), the acceleration of the particle, will be

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Q. The Law of Polygon of Forces states that

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Q. Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

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Q. Which one of the following statements is true ?

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Q. A projectile is thrown at an angle a to the horizontal with α velocity v. It will have the maximum centripetal acceleration

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Q. The unit of Moment of Inertia of a body, is

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Q. If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with

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Q. If the gravitational accelerational at any place is doubled, the weight of a body, will

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Q. The product of mass and velocity of a moving a body, is called

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Q. Engineer's units of force, is

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Q. Joule is the unit of

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Q. The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm and frequency 2 vibrations/sec, is

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Q. Pick up the correct statement from the following :

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Q. If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is

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