Question
a person stands in contact against the inner wall of a rotor of radius r. The coefficient of friction between the wall and the clothing is μ and the rotor is rotating about vertical axis. The minimum speed of the rotor so that the person does not slip downward is
the answer is √g/μr
Read 1 Solution.
mv2/r = R (horizontly)
f = mg (vertically)
mg = µR
mg = µ mv2/r
v = √(gr/µ ). dimension is of vel
here ans is not matching becoz u have given dimensionally incorrect optn ,check optn is not of velocity √(g/µr) has dimensn T-1 it may be possible that in the book optn is misprinted
SARIKA SHARMA
Best SolutionSARIKA 11 year ago
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