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The Lagrangian equation of motion for a system of spring and a mass m connected by a
pulley(disk) of radius a as shown in the figure is given by:
a
(a) @
За
2g 2ke
= 0
%3D
Зт
2g 2ke
(b) 0+
За
%3D
= 0
Зт
2g ke
(c) 0-
За
%3D
2g ke
(d) 0+
За
%3D

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