A rigid uniform bar of length 2.4m is pivoted horizontally at its mid-point. Weights are hung from two points of the bar such that a 200N is at the 0.4m mark and a 300N is at 1.6m mark.To maintain horizontal equilibrum a couple is applied to the bar. What is the torque and direction of the couple?


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Question Number 32075 by NECx last updated on 19/Mar/18

$A r i g i d u n i f o r m b a r o f l e n g t h 2.4 m$ $i s p i v o t e d h o r i z o n t a l l y a t i t s m i d - p o i n t .$ $W e i g h t s a r e h u n g f r o m t w o p o i n t s$ $o f t h e b a r s u c h t h a t a 200 N i s a t$ $t h e 0.4 m m a r k a n d a 300 N i s a t$ $1.6 m m a r k . T o m a i n t a i n$ $h o r i z o n t a l e q u i l i b r u m a c o u p l e i s$ $a p p l i e d t o t h e b a r . W h a t i s t h e$ $t o r q u e a n d d i r e c t i o n o f t h e c o u p l e ?$
Commented by NECx last updated on 19/Mar/18

$p l e a s e h e l p$
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