Concept explainers
Harry Hotrod rounds a corner in his sports car at 50 km/h. Fortunately, a
The force of friction to prevent a person H from skidding off the road if the speed is changed.
Answer to Problem 56A
The force of friction to prevent a person H from skidding off the road if the speed is doubled is four times the initial frictional force.
Explanation of Solution
Given:
Rotational speed is
Speed is doubled.
Formula used:
The expression for the frictional force is,
Here,
Calculation:
Consider the mass and the radius of curvature is constant.The frictional force is directly proportional to the speed.
The force of friction to prevent person H from skidding off the road if the speed is doubled is,
Conclusion:
Thus, the force of friction to prevent a person H from skidding off the road if the speed is doubled is four times the initial frictional force.
Chapter 10 Solutions
Conceptual Physics: The High School Physics Program
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