A road is 10mwide. Its radius of curvature is 50m. The outer edge is above the lower edge by a distance of 1./5m. This road is most suited for the velocity
A
2.5m/sec
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B
4.5msec
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C
6.5msec
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D
8.5msec
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Solution
The correct option is B2.5m/sec
Let, the angle of inclination =x
then,
tan(x)=v2(rg) ( Can be obtained easily when F.B.D is drawn)