Question

A car is moving with 72 km/ hr on a flat circular road of radius 10m can the car negotiate the curve with this speed . Take mu ^s = 0.3

Answer 1

Answer:

The car cannot take the turn.

Explanation:

Refer to the material.

Answer 2

The frictional force is less than the centripetal force. So, the car cannot negotiate the curve with this speed.

Explanation:

Given that,

Speed of the car, v = 72 km/h = 20 m/s

Radius of the curve, r = 10 m

The coefficient of friction, $\mu =0.3$

On the circular path, the frictional force is balanced by the centripetal force. So,

$\mu mg=\dfrac{mv^2}{r}\\\\\mu g=\dfrac{v^2}{r}$

$\mu g=0.3\times 10=3\\\\\dfrac{v^2}{r}=\dfrac{(20)^2}{10}=40$

So, the frictional force is less than the centripetal force. So, the car cannot negotiate the curve with this speed.

Learn more,

Banking of curve

https://brainly.in/question/8256002