Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 4, Problem 51P
(a)
To determine
To Find: The unstretched length of each spring.
(b)
To determine
To Find: The instantaneous acceleration of the weight.
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The system is released from rest with no slack in the cable and with the spring unstretched. Determine the distances traveled by the
4.5-kg cart before it comes to rest (a) if m approaches zero and (b) if m= 2.8 kg. Assume no mechanical interference and no friction. The
distances is positive if up the incline, negative if down.
k = 160 N/m
4.5 kg
m
Answers:
(a) m = 0,
S= i
(b) m = 2.8 kg, S= i
28°
m
m
5. ssm A person who weighs 670 N steps onto a spring scale in the
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A hummingbird of mass 0.16 oz lands on the end of a small horizontal branch, whichsubsequently oscillates up and down with a period of one second. Assuming that the twig is amassless spring. Estimate its force constant.
Chapter 4 Solutions
Physics Fundamentals
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