A car turns a corner on a slippery road at a constant speed of 12 m/s. If the coefficient of friction is 0.4, the minimum radius of the arc in meter in which the car turns is
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a
72
b
36
c
18
d
9
answer is B.
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Detailed Solution
maximum velocity for safe turningmv2r=μmg r=v2μg=1440.4×10=36