Q. If the angle of projection is double the angle of inclination (α) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be

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Q. In case of S.H.M. the period of oscillation(T), is given by

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Q. If α and u are angle of projection and initial velocity of a projectile respectively, the total time of flight, is given by

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Q. The reaction at the central support B of the beam ABC hinged at D shown in below figure is

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Q. If the resultant of two forces P and Q acting at an angle θ makes an angle α with P, then tan α equals

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Q. The moment of intertia of a circular lamina of diameter d, about an axis perpendicular to the plane of the lamina and passing through its centre, is

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Q. If l is the span of a light suspension bridge whose each cable carries total weight (w) and the central dip is y, the horizontal pull at each support, is

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Q. The C.G. of a hemisphere from its base measured along the vertical radius is at a distance of

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Q. Power developed by a torque, is

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Q. In the structure shown in below figure, the member which carries zero force, is

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Q. The reaction at the support D of the continuous beam ABCD, hinged at two points shown in below figure is

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Q. The moment of inertia of a triangular section (base b, height h) about centroidal axis parallel to the base, is

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Q. The horizontal reaction at the support A of the structure shown in below figure, is

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Q. The load shared by the member BC of the structure shown in below figure is

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Q. A vehicle weighing w kg is to run on a circular curve of radius r. If the height of its centre of gravity above the road level is h and the distance between the centres of wheels is 2a, the maximum velocity, in order to avoid over turning, will be

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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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