A circular road of radius r is banked for a speed v=40 km/hr. A car of mass m attempts to go on the circular road. The friction coefficient between the tyre and the road is negligible. 1. the car cannot make a turn without skidding. 2. If the car turns at a speed less than 40 km/hr, it will slip down 3. If the car turns at the correct speed of 40 km/hr, the force by the road on the car is equal to mu^2/r 4. If the car turns at the correct speed of 40 km/hr, the force by the road on the car is greater than mg as well as greater than `(mu^2)/r