The shear force at the centre of a simply supported beam of span l carrying a uniformly
distributed load of w per unit length over the whole span is
(a) wl
(b) wl/2
(c) wl/4
(d) Zero
distributed load of w per unit length over the whole span is
(a) wl
(b) wl/2
(c) wl/4
(d) Zero