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http:// gphys O B Pearson\'s MyLab & Mastering Masteringphysics: Assignments Mas

ID: 1293952 • Letter: H

Question

http:// gphys O B Pearson's MyLab & Mastering Masteringphysics: Assignments Mast gPh W 35 x File Edit View Favorites Tools Help Help Close PHY 161 Cole Fall 14 HW 35 Problem 11.86 Resources previous l 2 of 5 l next Problem 11.86 Part A Ancient pyramid builders are balancing a uniform rectangular If 20.10, what force does each worker exert on the rope? slab of stone tipped at an angle 6above the horizontal using a rope (the figure (Figure 1 The rope is held by five Express your answer in terms of w (the weight of the slab workers who share the force equally F 0.059 Figure 1 of 1 Subm My Answers Give Up 1.7s Incorrect Try Again, 4 attempts remaining Rope Part B As 0 increases, does each worker have to exert more or less force than in part A, assuming they do not change the angle of the rope? Why? if (theta) increases the work need to exert less force because the moment arm for tension increases and for 58.00 weight decreases My Answers Give Up Submitted, grade pending Ed TLI .mill ENG 924 PM 11/22/2014

Explanation / Answer

You can start by obtaining the weight of the slab. We'll call it W for now....

Take moments about the slab ground contact point P:

From P to the center of mass = R = ?[(1.75/2)