Is it safe to drive your 1600-kgkg car at speed 27 m/sm/s around a level highway curve of radius 150 mm if the effective coefficient of static friction between the car and the road is 0.40?

It isn't safe for the car to drive on this road.

The radial acceleration of the car exceeds the maximum radial acceleration the road can support.

Explanation:

For the road to be safe for the car, frictional force of the road on the car must always exceed or match the force keeping the car in circular motion

Frictional force of the road on the car = μmg = 0.4 × 1600 × 9.8 = 6272 N

Force keeping the car in circular motion = mv²/r = 1600×27²/150 = 7776 N

The force keeping the car in circular motion > Frictional force that the road can support the car with.

Maximum radial acceleration the road can support = Frictional force/mass of the car = 6272/1600 = 3.92 m/s²

Radial acceleration of the car currently = 7776/1600 = 4.86 m/s²

which evidently exceeds the maximum allowable radial acceleration

This means the road isn't safe for the car.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force