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Determining the Spring Constant, k, with a Vertically Hanging Mass

A vertically hanging spring with a natural length of 5.4 cm is extended to a length of 11.4 cm when 25 grams is suspended from it. What is the spring constant of the spring?

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:
0:08 Translating the problem
0:54 The free body diagram
1:53 Understanding the direction of the Spring Force
2:46 Summing the forces
3:32 Common misconception when using Hooke’s Law equation
5:00 Using the magnitude of the displacement from equilibrium 

Next Video: The Human Spine acts like a Compression Spring

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Previous Video: Hooke's Law Introduction - Force of a Spring

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Thank you to Aarti Sangwan and Christopher Becke for being my Quality Control Team for this video.

Thank you to Youssef Nasr for transcribing the English subtitles of this video.

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