A circular road of radius 1000 m has banking angle 45o. The maximum safe speed (in ms-1) of a car having a mass 2000 kg will be (if the coefficient of friction between tyre and road is 0.5)
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a
173
b
124
c
99
d
86
answer is A.
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Detailed Solution
vmax=Rg(tanθ+μ)1−μtanθ=1000×10×1+0.51-0.5×1=173 m/s