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Question

A car turns on a horizontal curved road of radius 40 m. If coefficient of friction is 0.4, then maximum speed with which car can take turn is : (take g=10m/s2)

A
4m/s
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B
25m/s
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C
410m/s
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D
104m/s
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Solution

The correct option is C 410m/s
Given,

r=40m

μ=0.4

g=10m/s2

The maximum speed with which car can take turns,

v=μrg

v=0.4×40×10

v=410m/s

The correct option is C.

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