Two people weighing W each are sitting on a plank of length

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Two people weighing W each are sitting on a plank of length L floating on water at L/4 from either end. Neglecting the weight of the plank, the bending moment at the centre of the plank is

1. WL/8
2. WL/16
3. WL/32
4. zero

Correct Option: D

At centre,

BM =	2ω	×	L	×	L	- ω ×	L	= 0
	L		2		4		4