Concept explainers
The magnitude of the static friction force acting on the boy.
Answer to Problem 10STP
The magnitude of the static friction force acting on the boy is
Explanation of Solution
Given:
The weight of the person S is
The person J applies extremely sticky paste to the top of the banister.
The coefficient of static friction of the banister is
The angle between the banister and the horizontal is
Formula used:
Consider a force
The magnitude of vertical component of the force
The expression for the static friction
Here,
Calculation:
The free body diagram of the situation is shown below.
To find the normal force
The static frictional force acting on the person S is,
Conclusion:
Thus, the magnitude of the static friction force acting on the boy is
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