Concept explainers
(a)
To find: The normal force acting on different points A, B and C.
(a)
Explanation of Solution
Introduction:
The resultant of normal reaction and weight of cool provides the centripetal acceleration.
At point A the expression for normal is
So normal is minimum at A
At point B the normal is
So normal at B is more than A
At point C the normal is
So normal at C is maximum
i.e.,
Conclusion:
Therefore normal at A is least and at C it is maximum.
(b)
To find: That where the driver will feel heaviest.
(b)
Explanation of Solution
Introduction:
The resultant force of normal and weight of driver will provide the centripetal acceleration.
The driver will feel heaviest at point C as the normal reaction at C is given as
The driver feels heavy when the normal force is larger than his weight.
The driver feels light when the normal force is smaller than his weight.
Then at point A he feels light.
At point B he feels his weight.
At point C he feels heavy.
Conclusion:
Therefore driver will feel heaviest at ‘C’.
(c)
To find: The maximum safe speed at A.
(c)
Answer to Problem 82GP
Explanation of Solution
Given Data:
Radius
Normal
Formula Used:
Calculation:
Substituting the value
i.e.,
Conclusion:
Therefore the maximum safe speed is
Chapter 5 Solutions
Physics: Principles with Applications
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