A cyclist moves in a circular track of radius $100$ m. If the coefficient of friction is $0.2$, then the maximum velocity with which the cyclist can take the turn with leaning inwards is ...... $m/s$
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(d) $v = \sqrt {\mu \,r\,g} $$ = \sqrt {0.2 \times 100 \times 10} = 10\sqrt 2 = 14\;m/s$
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