Answered: Figure P4.88 Laladadt

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter3: Force And Motion

Section: Chapter Questions

Problem 4MC: A net force can produce ___. (3.3) (a) an acceleration (b) a change in velocity magnitude (c) a...

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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 upward, and find its magnitude.
(b) Find the force the child exerts on the chair.

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