According to the concept of Limit State Design as per IS 456: 2000, the probability of failure of a structure is __________.

A steel member ‘M’ has reversal of stress due to live loads, whereas another member ‘N’ has reversal of stress due to wind load. As per $$IS$$ $$800: 2007,$$ the maximum slenderness ratio permitted is:
$$\left( 1 \right)\,\,\,\,\,$$ Lesser for member $$‘M’$$ than that of member $$‘N’$$
$$\left( 2 \right)\,\,\,\,\,$$ More for member $$‘M’$$ than for member $$‘N’$$
$$\left( 3 \right)\,\,\,\,\,$$ Same for both the members
$$\left( 4 \right)\,\,\,\,\,$$ Not specified in the Code

Prying forces are

A steel strip of length, $$L = 200$$ $$mm$$ is fixed at end $$A$$ and rests at $$B$$ on a vertical spring of stiffness, $$k = 2$$ $$N/mm.$$ The steel strip is $$5$$ $$mm$$ wide and $$10$$ $$mm$$ thick. $$A$$ vertical load, $$P = 50$$ $$N$$ is applied at $$B,$$ as shown in the figure. Considering $$E = 200$$ $$GPa,$$ the force (in $$N$$) developed in the spring is _______________