Math Problem Statement
DA 125 N sign is supported by two ropes. One rope pulls up © Macmillan Learn and to the right 01 = 35.5° above the horizontal with a tension T1, and the other rope pulls up and to the left 02 = 48.5° above the horizontal with a tension Tz, as shown in the figure. Find the tensions Ti and Tz.
Solution
To solve for the tensions and in the ropes supporting the sign, we need to apply the principles of equilibrium. Since the sign is in equilibrium, the sum of forces in both the horizontal and vertical directions must be zero.
Step-by-Step Solution:
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Breakdown of Forces: Each tension force can be split into horizontal and vertical components. Let’s denote the tension forces and their components as follows:
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Tension :
- Horizontal component:
- Vertical component:
- Angle
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Tension :
- Horizontal component:
- Vertical component:
- Angle
-
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Sum of Forces in the Horizontal Direction: The horizontal components must cancel each other out:
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Sum of Forces in the Vertical Direction: The vertical components must add up to the weight of the sign, which is 125 N (assuming the sign is in equilibrium and stationary):
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Solving the System of Equations: From the horizontal force balance equation:
Substitute this into the vertical force balance equation:
Simplifying to solve for :
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Calculating Tensions: Now we can plug in the angles and compute . Once we have , we can find using the horizontal force equation.
Let’s compute these values.The tensions in the two ropes are:
- (up and to the right at )
- (up and to the left at )
These values ensure that the sign remains in equilibrium.
Would you like more details or have any further questions? Here are some related questions you might find useful:
- How do you derive the formulas for horizontal and vertical force components?
- What are the conditions for equilibrium in a system?
- How would the tensions change if the angles were different?
- What if the weight of the sign changed to 150 N?
- How can you solve similar problems using a different approach, like vector diagrams?
Tip: Always ensure to break down forces into components when dealing with inclined forces and use trigonometric functions to analyze them accurately.
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Math Problem Analysis
Mathematical Concepts
Equilibrium
Trigonometry
Force Analysis
Formulas
Horizontal Force Balance: T1 * cos(θ1) = T2 * cos(θ2)
Vertical Force Balance: T1 * sin(θ1) + T2 * sin(θ2) = Weight
System of Equations
Theorems
Equilibrium Theorem (Sum of forces in a system is zero)
Suitable Grade Level
Grades 11-12
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