Tutorials in Introductory Physics
Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 24.4, Problem 3cTH

Is the image(s) of the nail real or virtual? Explain your reasoning.

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Attached to one end of a vertical wall is a 1120N uniform beam that is held up by a cable at the other end. At the far end of the beam hangs a 1960N crate.  Using the attached image, please answer the following questions: Why is the direction of Fv facing up instead of down? where should the pivot point be placed in the image below? Since we don't have the length of the beam, we know that is a uniform beam. If the length of the beam is L, what's the distance from the pivot to where the 1220N weight is hanging? and the length to where FT and the 1960N weight is? In order to find torques, What is the angle between FT and the beam? What is the angle between the weights and the beam? Find the tension force. Since you now know the tension force, find the forces FV and FH using Newton's 2nd law.
Need help. The first photo is the question. The second photo is an example of a similar question. Please take your time. I have been given the wrong answer too many times.
Choose the correct statement that best describes the illustration. Please provide a brief explanation.

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Tutorials in Introductory Physics

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AP Physics 2 - Geometric Optics: Mirrors and Lenses - Intro Lesson; Author: N. German;https://www.youtube.com/watch?v=unT297HdZC0;License: Standard YouTube License, CC-BY