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derived expression for centripetal acceleration
for first question
when the force is exerted on an object moving in a circular motion attracted towards the centre of an object then it is called centripetal acceleration
for question number 2
the friction force of an object due to the road is not always reliable due to road or oily or a weight due to rains to avoid this difficulty the roads are generally banked due to banking of roads the centripetal force is provided by an object with normal reaction
for first question
when the force is exerted on an object moving in a circular motion attracted towards the centre of an object then it is called centripetal acceleration
for question number 2
the friction force of an object due to the road is not always reliable due to road or oily or a weight due to rains to avoid this difficulty the roads are generally banked due to banking of roads the centripetal force is provided by an object with normal reaction
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