. What is the maximum constant speed with which a car can round a circular turn of radius 80.0 m ona flat road if the coefficient of static friction between tires and road isμs= 0.55

Maximum constant speed with which a car can round is 20.76 m/s.

Explanation:

We know, for car to be move on flat road without slipping its  centripetal force should not exceed static friction.

Therefore, maximum value of friction must be equal to centripetal force.

Therefore,

Now, putting all given values and .

We get ,

Hence, this is the required solution.

you go to your settings preference and in the end youll see sth that says "i want to delete my acc" click on it and u'll acc will be deleted but u have to wait.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.