When a 4.00 Kg mass hangs on a spring, it stretches by 2.5 cm. a) If we hang a 1.5 Kg mass instead, how far will the same string stretch? b) How much work to stretch the same string 4.00 cm?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter6: Energy Of A System
Section: Chapter Questions
Problem 17P: When a 4.00-kg object is hung vertically on a certain light spring that obeys Hookes law, the spring...
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Work done by a spring force
Ws
=
Xƒ
Xi
-Fx dx
F
Ē¸ = − kā
When a 4.00 Kg mass hangs on a spring, it stretches by 2.5
cm.
a) If we hang a 1.5 Kg mass instead, how far will the same
string stretch?
b) How much work to stretch the same string 4.00 cm?
Transcribed Image Text:Work done by a spring force Ws = Xƒ Xi -Fx dx F Ē¸ = − kā When a 4.00 Kg mass hangs on a spring, it stretches by 2.5 cm. a) If we hang a 1.5 Kg mass instead, how far will the same string stretch? b) How much work to stretch the same string 4.00 cm?
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