College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question
A 9 m long board that has a mass of 14. Each end is held up by a vertical rope. A 45 kg box sits 1 m from the left end. Find the tension in the rope on the right.
Hint:
- With forces applied at different places, this is a beam problem
- pick a pivot point
- measure all distances from the pivot point
- Apply Στ = 0
- Don't forget torque = force x dist, so you need to multiply the masses by g = 9.8 m/s2
- If you need more information, apply ΣF = 0
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