
Concept explainers
(a)
To Find:The normal force.
(a)

Answer to Problem 95P
Explanation of Solution
Given Information:
Mass of the car
Angle of incline,
Radius of curvature,
Speed of car is
Formula Used:
Newton’s second law of motion:
Calculation:
The free body diagram shows the forces acting the car.
Speed of the car
Apply
Apply
Multiply the equation
Add the equation
Solving the above equation for
Substitute all the known values in equation
Conclusion:
Therefore, the normal force is
(b)
To Find:The frictional force exerted.
(b)

Answer to Problem 95P
Explanation of Solution
Given Information:
The speed of car on the curve road is
Formula Used:
Newton’s second law of motion:
Calculation:
The free body diagram shows the forces acting the car.
Apply
Solving the equation
Calculation:
Therefore, the frictional force is
Here the negative sign indicates that force
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