Explanation Considering the centers of gravities of the left half of the circular positions is same as that of right halves from below diagram. Given: Fis the load of the arch F H ( r o u n d ) is the horizontal force exerted from the base of the round arch. F H ( p o i n t ) is the horizontal force exerted from the base of the point arch. L = 8 m is the width of the space Calculations: The horizontal force exerted to the point arch is one third of the round arch. From the given statement F H ( p o i n t ) = 1 3 F H ( r o u n d ) A round arch is simply a semicircle (top half of a circle, diameter 8m) resting on 2 supports. The arch itself can be thought of as 2 halves. From diagram, the line of action of F (pointing left and acting through the top of L) is a distance 8 2 m (radius of arch) from the base of L. So, it produces a moment (torque) about the base of L equal to F × 8 / 2

Physics: Principles with Applications, Books a la Carte Edition & Modified Mastering Physics with Pearson eText -- ValuePack Access Card Package

1st Edition

ISBN: 9780321974990

Author: Douglas C. Giancoli

Publisher: PEARSON

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

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Chapter 9, Problem 57P

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Height of the pointed arch.

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Chapter 9, Problem 56P

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Chapter 9 Solutions

Physics: Principles with Applications, Books a la Carte Edition & Modified Mastering Physics with Pearson eText -- ValuePack Access Card Package

Ch. 9 - Prob. 1OQ Ch. 9 - Describe several situations in which an object is...Ch. 9 - Prob. 2Q Ch. 9 - You can find the center of gravity of a meter...Ch. 9 - Prob. 4Q Ch. 9 - A ground retaining wall is shown in Fig. 9-36a...Ch. 9 - Can the sum of the torques on an object be zero...Ch. 9 - A ladder, leaning against a wall, makes a 60°...Ch. 9 - A uniform meter stick supported at the 25-cm mark...Ch. 9 - Why do you tend to lean backward when carrying a...

Ch. 9 - Figure 9-38 shows a cone. Explain how to lay it on...Ch. 9 - Prob. 11Q Ch. 9 - Why is it not possible to sit upright in a chair...Ch. 9 - Why is it more difficult to do sit-ups when your...Ch. 9 - Explain why touching your toes while you are...Ch. 9 - Prob. 15Q Ch. 9 - Name the type of equilibrium for each position of...Ch. 9 - ( 17. ) Is the Young's modulus for a bungee cord...Ch. 9 - Prob. 18Q Ch. 9 - Prob. 19Q Ch. 9 - A 60-kg woman stands on the very end of a uniform...Ch. 9 - Prob. 2MCQ Ch. 9 - Prob. 3MCQ Ch. 9 - Prob. 4MCQ Ch. 9 - Two children are balanced on opposite sides of a...Ch. 9 - Prob. 6MCQ Ch. 9 - Prob. 7MCQ Ch. 9 - Prob. 8MCQ Ch. 9 - Prob. 9MCQ Ch. 9 - Prob. 10MCQ Ch. 9 - Three forces are applied to a tree sapling, as...Ch. 9 - Prob. 2P Ch. 9 - 3(I) A tower crane ( Fig. 9-48a) must always be...Ch. 9 - What is the mass of the diver in Fig. 9-49 if she...Ch. 9 - Prob. 5P Ch. 9 - Figure 9-50 shows a pair of forceps used to hold a...Ch. 9 - Prob. 7P Ch. 9 - The two trees in Fig. 9-51 are 6.6 m apart. A...Ch. 9 - Prob. 9P Ch. 9 - Prob. 10P Ch. 9 - Prob. 11P Ch. 9 - Find the tension in the two cords shown in Fig....Ch. 9 - Prob. 13P Ch. 9 - Prob. 14P Ch. 9 - The force required to pull the cork out of the top...Ch. 9 - Prob. 16P Ch. 9 - Three children are trying to balance on a seesaw,...Ch. 9 - A shop sign weighing 215 N hangs from the end of a...Ch. 9 - Prob. 19P Ch. 9 - Prob. 20P Ch. 9 - Prob. 21P Ch. 9 - 22 (II) A 20.0-m-long uniform beam weighing 650 N...Ch. 9 - Prob. 23P Ch. 9 - Prob. 24P Ch. 9 - Prob. 25P Ch. 9 - Prob. 26P Ch. 9 - A uniform rod AB of length 5.0 m and mass M=3.S kg...Ch. 9 - You are on a pirate ship and being forced to walk...Ch. 9 - Prob. 29P Ch. 9 - Prob. 30P Ch. 9 - Prob. 31P Ch. 9 - Prob. 32P Ch. 9 - Prob. 33P Ch. 9 - Prob. 34P Ch. 9 - Prob. 35P Ch. 9 - 36 (II) The Achilles tendon is attached to the...Ch. 9 - If 25 kg is the maximum mass m that a person can...Ch. 9 - Prob. 38P Ch. 9 - Prob. 39P Ch. 9 - Prob. 40P Ch. 9 - A marble column of cross-sectional area 1.4 m2...Ch. 9 - Prob. 42P Ch. 9 - A sign (mass 1700 kg) hangs from the bottom end of...Ch. 9 - Prob. 44P Ch. 9 - Prob. 45P Ch. 9 - Prob. 46P Ch. 9 - A steel wire 2.3 mm in diameter stretches by...Ch. 9 - Prob. 48P Ch. 9 - Prob. 49P Ch. 9 - Prob. 50P Ch. 9 - Prob. 51P Ch. 9 - Prob. 52P Ch. 9 - (a) What is the minimum cross-sectional area...Ch. 9 - Prob. 54P Ch. 9 - Prob. 55P Ch. 9 - Prob. 56P Ch. 9 - Prob. 57P Ch. 9 - Prob. 58GP Ch. 9 - Prob. 59GP Ch. 9 - Prob. 60GP Ch. 9 - Prob. 61GP Ch. 9 - Prob. 62GP Ch. 9 - Prob. 63GP Ch. 9 - Prob. 64GP Ch. 9 - When a mass of 25 kg is hung from the middle of a...Ch. 9 - Prob. 66GP Ch. 9 - Prob. 67GP Ch. 9 - Prob. 68GP Ch. 9 - Prob. 69GP Ch. 9 - Prob. 70GP Ch. 9 - Prob. 71GP Ch. 9 - Prob. 72GP Ch. 9 - Prob. 73GP Ch. 9 - A 2.0-m-high box with a 1.0-m-square base is moved...Ch. 9 - Prob. 75GP Ch. 9 - Prob. 76GP Ch. 9 - Prob. 77GP Ch. 9 - Prob. 78GP Ch. 9 - In a mountain-climbing technique called the...Ch. 9 - Prob. 80GP Ch. 9 - A cubic crate of side s=20m is top-heavy: its cgis...

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