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Question Number 54360 by ajfour last updated on 02/Feb/19

Commented by ajfour last updated on 02/Feb/19

$F i n d m i n i m u m m a s s o f b l o c k$ $t h a t s h o u l d b e g l u e d a t t h e t o p o f$ $w e d g e t o c a u s e i t t o t o p p l e d o w n .$
	Answered by ajfour last updated on 02/Feb/19

	$s h o u l d i t b e m ⩾ \frac{M}{3} (\frac{a}{b \cos α} - 1) ?$
	Answered by mr W last updated on 02/Feb/19

	$m g b \cos α ⩾ M g [\frac{2}{3} (\frac{a}{2} + b \cos θ) - b \cos α]$ $m b \cos α ⩾ M [\frac{a - b \cos α}{3}]$ $\Rightarrow m ⩾ \frac{M}{3} [\frac{a}{b \cos α} - 1]$
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