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Q.

A car driver round a curved path of  radius 18 m  without the danger of skidding. The coefficient of friction between tyres of the car and surface of curved path is 0.2 what is minimum speed of the car safe driving  [g=10m/s2]

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a

6 ​ Kmph

b

6​ m/s2

c

6​ m/s

d

6​  cm/s

answer is C.

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Detailed Solution

ϑ=μgr

=0.2×10×18

=36=6​ m/s

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