Question

What is the condition for safe turning of a car on a circular path .???​

Answer 1

Answer:

When a vehicle travels in a curved path, there must be a centripetal force acting on it. This centripetal force is provided by the frictional force between tyre and surface of the road. Consider a vehicle of mass ‘m’ moving at a speed ‘v’ in the circular track of radius ‘r’.

1.        Gravitational force (mg) acting downwards

2.        Normal force (mg) acting upwards

3.        Frictional force (Fs) acting horizontally inwards along the road

Explanation:

Suppose the road is horizontal then the normal force and gravitational force are exactly equal and opposite. The centripetal force is provided by the force of static friction Fs between the tyre and surface of the road which acts towards the center of the circular track,

As we have already seen in the previous section, the static friction can increase from zero to a maximum value

The static friction would be able to provide necessary centripetal force to bend the car on the road. So the coefficient of static friction between the tyre and the surface of the road determines what maximum speed the car can have for safe turn.

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Answer 2

Condition for safe turning of a car on a circular path:

Explanation:

• When a car moves in a circular path, then a force acts on it at the center of the circle, this force is called centripetal force.
• In the absence of this force, a car cannot move on a circular path. If a body of mass m is moving in a circular path of radius v to r, then the centripetal force required on it towards the center of the working circle is f=mv2/r.
• The power circling back to a body toward a way inverse to the fast speed towards the point of convergence of the way is known as the centripetal power. Due to centripetal power, the body moves along a twisted way (and not on an immediate way). For example, the justification for indirect development is the centripetal power.
• According to Newton's second law of motion, if there is any acceleration, then there must be a force acting in the direction of acceleration.