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(a) What minimum force F is needed to lift the piano (mass

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 78GP Chapter 4

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 78GP

Problem

(a) What minimum force F is needed to lift the piano (mass M) using the pulley apparatus shown in Fig. 4—66? (b) Determine the tension in each section of rope: FT1, FT2 , FT3 and FT4 Assume pulleys are massless and frictionless, and that ropes are massless.

Step-by-Step Solution:

Solution 78GP: In the first part, we have to derive the relation between the minimum applied force F in terms of mass of the piano M , while in the second part we have to derive the relation between the tensions in various part of the rope. Step 1 of 3 Concept: Newton’s second law: The net force F acting on an object of mass m produces an acceleration a in that object. Mathematically, F= ma. Tension is the internal developed in the rope, which depends upon the application and magnitude of force applied. Free body diagram of a body gives the diagrammatical representation of all the forces acting on the body in terms of magnitude and diagram, under the given situation.

Step 2 of 5

Chapter 4, Problem 78GP is Solved
Step 3 of 5

Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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(a) What minimum force F is needed to lift the piano (mass