A point-like mass is constrained to move along the z-axis only. It is attached to two springs, each of spring constant k, and each of rest length 0. One spring has one of its ends fixed at x = 0 and y = h; the other spring is fixed at one end to x = 0 and y=-h as shown in the figure below. Gravity does not act on the system. The springs do not bend but contract and extend along straight lines between their end points. y h (a) How many degrees of freedom does the system have? (b) Write down the Lagrangian of the system. www. (c) Write down the corresponding Euler-Lagrange equation(s). m

Principles of Physics: A Calculus-Based Text
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Chapter6: Energy Of A System
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Problem 19P: A light spring with spring constant 1 200 N/m is hung from an elevated support. From its lower end...
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A point-like mass is constrained to move along the z-axis only. It is attached to two springs, each of
spring constant k, and each of rest length 0. One spring has one of its ends fixed at x = 0 and y = h; the
other spring is fixed at one end to x = 0 and y = -h as shown in the figure below. Gravity does not act on
the system. The springs do not bend but contract and extend along straight lines between their end points.
y
h
(b) Write down the Lagrangian of the system.
h
(a) How many degrees of freedom does the system have?
wwww
(c) Write down the corresponding Euler-Lagrange equation(s).
m
X
Transcribed Image Text:TIL A point-like mass is constrained to move along the z-axis only. It is attached to two springs, each of spring constant k, and each of rest length 0. One spring has one of its ends fixed at x = 0 and y = h; the other spring is fixed at one end to x = 0 and y = -h as shown in the figure below. Gravity does not act on the system. The springs do not bend but contract and extend along straight lines between their end points. y h (b) Write down the Lagrangian of the system. h (a) How many degrees of freedom does the system have? wwww (c) Write down the corresponding Euler-Lagrange equation(s). m X
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