to a rope that passes over a frictionless pulley (Fig. P5.41), Nick pulls on the loose end of the rope with such a force that the spring scale reads 250 N. Nick's true weight is 320 N, and the chair weighs 160 N. Nick's feet are not touch- ing the ground. (a) Draw one pair of diagrams showing the forces for Nick and the chair considered as separate systems and another diagram for Nick and the chair considered as one system. (b) Show that the acceleration of the system is upward and find its magnitude. (c) Find the force Nick exerts on the chair.

College Physics
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ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter4: The Laws Of Motion
Section: Chapter Questions
Problem 73AP: A car accelerates down a hill (Fig. P4.87), going from rest to 30.0 m/s in 6.00 s. During the...
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41. An inventive child named Nick 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. P5.41),
Nick pulls on the loose end of the rope with such a force
that the spring scale reads 250 N. Nick's true weight is
320 N, and the chair weighs 160 N. Nick's feet are not touch-
ing the ground. (a) Draw one pair of diagrams showing the
forces for Nick and the chair considered as separate systems
and another diagram for Nick and the chair considered as
one system. (b) Show that the acceleration of the system is
upward and find its magnitude. (c) Find the force Nick
exerts on the chair.
Transcribed Image Text:41. An inventive child named Nick 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. P5.41), Nick pulls on the loose end of the rope with such a force that the spring scale reads 250 N. Nick's true weight is 320 N, and the chair weighs 160 N. Nick's feet are not touch- ing the ground. (a) Draw one pair of diagrams showing the forces for Nick and the chair considered as separate systems and another diagram for Nick and the chair considered as one system. (b) Show that the acceleration of the system is upward and find its magnitude. (c) Find the force Nick exerts on the chair.
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