Theory of Structures
A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm²), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is

25 N
30 N
35 N
40 N

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Theory of Structures
The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying

A uniformly distributed load ? per unit run over its entire span is 4/3 ?R/?
A distributed load varying from zero at the left end to ? per unit horizontal run at the right end, is ? ?R/?
A uniformly distributed load ? per unit run over its right half span, is ? ?R/?
All of these

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