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Question Number 52043 by ajfour last updated on 02/Jan/19

Commented by ajfour last updated on 02/Jan/19

$E x c e p t g r o u n d a l l s u r a c e s a r e$ $f r i c t i o n l e s s . A n w e d g e h a s t o$ $s u p p o r t t w o c y l i n e r s o n e t o p o f$ $a n o t h e r a g a i n s t w a l l . F i n d$ $m i n i m u m μ o n g r o u n d f o r$ $n e e d e d e q u i l i b r i u m .$
	Answered by mr W last updated on 02/Jan/19

	$N = n o r m a l f o r c e b e t w e e n b a l l a n d w e d g e$ $N \cos α = (m + m_{0}) g$ $\Rightarrow N = \frac{(m + m_{0}) g}{\cos α}$ $N \sin α ⩽ μ (M + m + m_{0}) g$ $\Rightarrow μ ⩾ \frac{(m + m_{0}) \tan α}{M + m + m_{0}}$
	Commented by ajfour last updated on 02/Jan/19

	$V e r y n i c e S i r, i m i s t o o k i t m i g h t$ $b e l i t t l e i n t e r e s t i n g .$
	Commented by mr W last updated on 02/Jan/19

	$i t m a k e s n o d i f f e r e n c e i f i t i s o n e b a l l$ $o r m o r e b a l l s, i t h i n k .$
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