If l is the span of a light suspension bridge whose each cable carries total wei

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Question
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
Options
A.
B.
C.
D. wl.

Correct Answer

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4. The centre of gravity of a plane lamina will not be at its geometrical centre if it is a
Options
A. circle
B. equilateral triangle
C. rectangle
D. square
E. right angled triangle.

5. A point subjected to a number of forces will be in equilibrium, if
Options
A. sum of resolved parts in any two directions at right angles, are both zero
B. algebraic sum of the forces is zero
C. two resolved parts in any two directions at right angles are equal
D. algebraic sum of the moments of the forces about the point is zero
E. none of these.

7. A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be
Options
A. zero
B. 0.5 m/sec
C. 1.0 m/sec
D. 2.0 m/sec.

9. The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane
Options
A. to be zero
B. to be maximum
C. to be minimum
D. none of the these.

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