Question

7) In a parking lot, a driver is learning how to negotiate a turn and driving in circle. She is now driving at 10 m/s while making a circle. While keeping at this speed, she is trying to make the circle as small as possible without skidding. What is the radius of the smallest circle possibly? The coefficient of friction is Us= 0.75 between the tire and the road surface.

Answer 1

Here, mv²/R = usmg

=>   v²/R = usg

=>   the radius of the smallest circle = v²/usg

                                                       = 10 * 10/(0.75 * 9.81)

                                                         = 13.59 m