(c) Show that when 8 = 0 no deflection unless P has certain particular values.

Note that in the above, m2 denotes PcosO/EI.

The following expression may be used in part (b) where appropriate:

a3 2a5

2.19 (C). A slender strut of length L is encastré at one end and pin-jointed at the other. It carries an axial load P and a couple M at the pinned end. If its flexural rigidity is EI and P/EI — n, show that the magnitude of the couple at the fixed end is r nL — smnL

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