Concept explainers
Consider Nellie in Figure 2.12. What changes in rope tension occur when the ropes make a greater angle with the vertical?
To explain: The changes in rope tension if the ropes make a greater angle with the vertical.
Answer to Problem 19A
The tension in each rope increases.
Explanation of Solution
Introduction:
Support force is the upward force that balances the weight of an object on the surface. It is also called as the normal force.
Consider the figure shown below.
  
It shows the ropes are at greater angle from the vertical.
For equilibrium, the weight of person N should be equal to the support force.
According to the parallelogram of forces, as angle increases, the vector length will also increase so that the diagonal will remain the same. Hence, the tension in each rope increases with an increase in angle.
Conclusion:
Thus, the tension in each rope increases.
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