College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300



College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A uniform plank of length 2.00 m and mass 30.0 kg is supported by three ropes, as indicated by the blue vectors in Figure P8.27. Find the tension in each rope when a 700.-N person is d = 0.500 m from the left end.


Figure P8.27

To determine
The tension on each rope.


Given info: The length of the plank (l) is 2.00 and  mass of the plank (m) is 30.0 kg.


The free body diagram is,

The torque on the left edge about an axis perpendicular to the page is zero. Therefore,


Substitute 2.00 m for l and 0.500 m for d.


Rearrange the expression to find the value of T1 .


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