A 5kg block rests on a 30° incline.The coefficient of static friction between the block and incline is 0.20.How large a horizontal force must push on the block if the block is to be on the verge of sliding (a)up the incline (b) down the incline?


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Question Number 74678 by necxxx last updated on 28/Nov/19

$A 5 k g b l o c k r e s t s o n a 30 ° i n c l i n e . T h e$ $c o e f f i c i e n t o f s t a t i c f r i c t i o n b e t w e e n$ $t h e b l o c k a n d i n c l i n e i s 0.20 . H o w l a r g e$ $a h o r i z o n t a l f o r c e m u s t p u s h o n t h e$ $b l o c k i f t h e b l o c k i s t o b e o n t h e v e r g e o f$ $s l i d i n g (a) u p t h e i n c l i n e (b) d o w n t h e$ $i n c l i n e ?$
	Answered by Rio Michael last updated on 29/Nov/19

	$a) 36.7 N$ $b) 3.7 N$
	Commented by necxxx last updated on 29/Nov/19

	$n o s i r . T h e a n s w e r s a r e 43 N a n d 16.6 N$
	Commented by Rio Michael last updated on 29/Nov/19

	$y e s y o u r r i g h t, i m a d a m i s t a k e i n m y$ $c o m p u t a t a t i o n a n d t o o k g = 10 {m s}^{- 2}$
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