Question

A cicular road of radius r is blanked for a speed v=60 km/hr. A car of mass m to go on the circular road.
A. If the car turns at a speed more than 60km/hr, then only friction force will act.
B. If the car turns at speed other than 60km/hr, the friction force will act along inclined
C. If the car turns at the speed of 60km/hr, the force by the road on the car is equal to `(mv^(2))/(r)`
D. If the car turns at the speed of 60km/hr, the force by the road on the car is greater than mg as well as greater than `(mv^(2))/(r)`

Answer 1

`N cos thetarArrmg`
`N sin thetarArr (mv^(2))/(R)`
`N=sqrt(((nv^(2))/(R))^(2)+(mg)^(2))`
for `v gt 60km/hr`.
friction will also along inclined.