For a spring of uniform section of thickness 't', breadth 'b', length 'l' between hinged supports, subjected to load 'W' at the centre, the maximum deflection is
1
\(\dfrac{Wl^3}{Ebt^3}\)
2
\(\dfrac{Wl^3}{2Ebt^3}\)
3
\(\dfrac{Wl^3}{4Ebt^3}\)
4
\(\dfrac{Wl^3}{8Ebt^3}\)