A three hinged arch is loaded with an isolated load 1000 kg at a horizontal dist

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Question
A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is
Options
A. 1250 kg
B. 125 kg
C. 750 kg
D. 2500 kg
E. 2325 kg.

Correct Answer

1250 kg

Strength of Materials problems

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3. A beam of length L supported on two intermediate rollers carries a uniformly distributed load on its entire length. If sagging B.M. and hogging B.M. of the beam are equal, the length of each overhang, is
Options
A. 0.107 L
B. 0.207 L
C. 0.307 L
D. 0.407 L
E. 0.5 L.

7. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the deflection of the coil is
Options
A.
B.
C.
D.

8. A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be
Options
A. 5 tonnes metre
B. 10 tonnes metre
C. 15 tonnes metre
D. 20 tonnes metre
E. none of these.

10. Reactions at the supports of a structure can be determined by equating the algebraic sum of
Options
A. horizontal forces to zero
B. vertical forces to zero
C. moment about any point to zero
D. all the above.

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