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A wooden block of mass 100 kg rest on a flat wooden floor, the coefficient of friction b/w the two being 0.4.The block is pulled by a rope making an angle

of 30 degree with the horizontal.What is the minimum tension along the rope that just makes the block sliding ?


M not from Arya Gurukul though now..
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See fbd in given photo

as u can see to move the block on wooden flat surface horizontal component is used i.e FcosФ

F* \sqrt{3} /2=400
f=800/ \sqrt{3} N
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i cannot upload the photo can u plz draw your self or see in other answer
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