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 ?

2

Answers

2016-03-10T17:12:06+05:30
M not from Arya Gurukul though now..
0
2016-03-10T18:48:32+05:30
See fbd in given photo

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

FcosФ=0.4*100*10
Fcos30°=400
F* \sqrt{3} /2=400
f=800/ \sqrt{3} N
0
i cannot upload the photo can u plz draw your self or see in other answer