A block of mass 10kg is in contact against the inner wall of a hollow cy...
Q. A block of mass 10kg is in contact against
the inner wall of a hollow cylindrical drum of radius 1m. The
coefficient of friction between the block and the inner wall of the cylinder
is 0.1. The minimum angular velocity
needed for the cylinder to keep the block stationary when the cylinder is
vertical and rotating about its axis, will be : (g=10m/s2)
Description :Neet 2019 | Circular
Motion q 1 | As you saw in my previous hint videos " Fotu Banao"
& " Funda Kya " Here Friction is upwards and opposes tendency to move down. Also Normal
Force towards the centre to provide
centripetal acceleration. If block doesn’t fall down then weight of block should
be less than the maximum value of static friction. It was a tough qus because
of mixing of concepts of Newton
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