Concept explainers
The block has a weight of 20 lb and is being hoisted at uniform velocity. Determine the angle θ for equilibrium and the force in cord AB.
The angle
Answer to Problem 10P
The angle
Explanation of Solution
Given information:
- The weight of block is 20 lb.
Assumption:
- The tension along the length of cord CAD is constant.
Show the free body diagram of the block as in Figure 1.
Determine the angle and force in cord AB by applying the Equation of equilibrium.
Along horizontal direction:
Along vertical direction:
Formula used:
Substitute
Conclusion:
Substitute
Substitute
Thus, the angle
Thus, the force in cord AB is
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Chapter 3 Solutions
Engineering Mechanics: Statics & Dynamics, Student Value Edition (14th Edition)
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