2. (a) A force F1, of magnitude 12V5 N, acts at the point (1, 7) towards the point (7, 10). Another force, F acts at the point (1, 4). Given that F1 and F2 form a couple. Find the cartesian cquation of the line of action of F2 and the magnitude of the couple. (b) An clastic string AB of natural length 2 m has the end A fixed. A load of mass 4kg is attached to the other end B so that the system hangs freely in equilibrium. Find the work that must be done to extend the unloaded string from a length of 2.5 m to 2.9 m.

2. (a) A force F1, of magnitude 12V5 N, acts at the point (1, 7) towards the point (7, 10). Another force, F acts at the point (1, 4). Given that F1 and F2 form a couple. Find the cartesian cquation of the line of action of F2 and the magnitude of the couple. (b) An clastic string AB of natural length 2 m has the end A fixed. A load of mass 4kg is attached to the other end B so that the system hangs freely in equilibrium. Find the work that must be done to extend the unloaded string from a length of 2.5 m to 2.9 m.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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