Question

A car is going around a circle of radius r1 at constant speed

Answer 1

ANSWER__☺️

There is no need of a picture. The required centripetal force is provided by the frictional force between tyre and road. This force acts radially and is responsible for circular motion. If there is not enough friction, a car won't be able to move in a circle. If v is the velocity, then (m*v^2)/r is the required frictional force. If the value of maximum possible frictional force is below this, a car won't be able to move at this velocity in a circle of radius r.

MARK BRAINLIEST✓✓

Answer 2

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$\mathtt{Here\:is\:ur\:@nswer}$ :

⎇ The required centripetal force is provided by the frictional force between tyre and road. This force acts radially and is responsible for circular motion. If there is not enough friction, a car won't be able to move in a circle. If v is the velocity, then (m*v^2)/r is the required frictional force. If the value of maximum possible frictional force is below this, a car won't be able to move at this velocity in a circle of radius r.