Answered: Figure P4.88

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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Question

An inventive child wants to
reach an apple in a tree without climbing the tree. Sitting
in a chair connected to a
rope that passes over a frictionless pulley (Fig. P4.88),
the child pulls on the loose
end of the rope with such a
force that the spring scale
reads 250 N. The child's
true weight is 320- N, and
the chair weighs 160 N. The
child's feet are not touching
the ground. (a) Show that the acceleration of the system is ufrward, and find its magnitude. (b) Find the force the child exerts on the chair

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