Question

# A vehicle is travelling with uniform speed along concave road and then along convex road of same radius of curvature. If the normal reaction on the vehicle is half of its weight as it reaches highest point of convex road, then normal reaction on the vehicle as it reaches lowest point of concave road is:

A
twice weight of vehicle
B
thrice weight of vehicle
C
1.5 times weight of vehicle
D
2 times weight of vehicle
Solution
Verified by Toppr

#### In case of convexmg−N2=mV2R−(1)In case of concaveN1−mg=mV2R−(2)Given N2=mg2∴In−(1),mg2=mV2Rput it in - (2)N1−mg=mg2N1=32mg 0
Similar Questions
Q1

A vehicle is travelling with uniform speed along a concave road of radius of curvature 19.6 m. At lowest point of concave road if the normal reaction on the vehicle is three times its weight, the speed of vehicle is:

View Solution
Q2

A vehicle is travelling along concave road then along convex road of same radius of curvatures at uniform speed. If the normal reactions on the vehicle as it crosses the lowest point of concave surface, highest point of convex surface are 1.5×104N,0.3×103N respectively, the mass of vehicle is: (g=10m/s2)

View Solution
Q3

A vehical is traveling with uniform speed along concave road and then along convex road of same radius of curvature. If the normal reaction on the wheel is half of its weight as it reaches highest point of the convex road, then normal reaction on the vehical as it reaches the lowest point of concave road is:

View Solution
Q4

A vehicle of mass m is driven along an un-banked curved path of radius of curvature r with a speed v. If μ is necessary minimum coefficient of friction between tyres of vehicle and road so that the vehicle does not skid, then:

View Solution
Q5

A vehicle is travelling at uniform speed 36 kmph along a fly-over bridge and a person of mass 50 kg in the vehicle experiences a normal reaction 390 N as the vehicle crosses the highest point. The radius of curvature of the fly-over bridge is:

View Solution
Solve
Guides