Explanation Given data: Refer to the Figure P8.9 in the textbook for the rotating arrangement of the pole and the supporting wires for the pole. From the Figure, the height of the pole is h . The angle between left wire to the horizontal line (ground) is 63 ° and the angle between the right wire and the horizontal line is 27 ° . The right wire is attached the pole at haft of the height of the pole. Formula used: Write the expression for static equilibrium condition of the torque as follows. ∑ τ = 0 (1) Here, ∑ τ is the sum of the torques acting on any object. Write the expression for torque in terms of force and distance as follows. τ = F d (2) Here, F is the force, and d is the distance. From the given data, the system is in equilibrium condition. Draw the figure by using triangle rule (sum of the angles in the triangle is 180 ° ) for the given system as shown in Figure 1. From the figure, the angle between the left wire and top of the pole is 27 ° . θ left = 27 ° [ ∵ 180 ° − ( 90 ° + 63 ° ) ] From the figure, the angle between the right wire and the middle of the pole is 63 ° . θ right = 63 ° [ ∵ 180 ° − ( 90 ° + 27 ° ) ] Compute the sum of the torques around the bottom of the pole by modifying the expression in equation (1) by using the equation (2) and Figure 1 as follows

3rd Edition

ISBN: 9780321989246

Author: Knight

Publisher: PEARSON CO

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Chapter 8, Problem 9P

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To find: The ratio of tension in the left wire to the right wire.

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Chapter 8, Problem 8P

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Chapter 8 Solutions

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The ratio of tension in the left wire to the right wire.

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Chapter 8 Solutions