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wdednam
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Homework Statement
Determine the kinetic energy of a bead of mass m which slides along a frictionless wire bent in the shape of a parabola of equation y = x2. The wire rotates at a constant angular velocity [tex]\omega[/tex] about the y-axis.
Homework Equations
T = [tex]\frac{1}{2}[/tex]m([tex]\dot{x}^2[/tex] + [tex]\dot{y}^2[/tex] + [tex]{x}^2[/tex][tex]\omega^2[/tex])
The Attempt at a Solution
The above equation represents my attempt to write down the kinetic energy of the system in an appropriate coordinate system. After this I eliminated [tex]\dot{y}[/tex] in favour of [tex]\dot{x}[/tex] using y = x2 and got:
T = [tex]\frac{1}{2}[/tex]m([tex]\dot{x}^2[/tex] + 4[tex]{x}^2[/tex][tex]\dot{x}^2[/tex] + [tex]{x}^2[/tex][tex]\omega^2[/tex])
Does this look right to anyone? The book (study guide) I'm using was unfortunately compiled by my University and no answers are supplied to end-of-chapter problems. This problem comes out of the first chapter of my study guide and all the problems there basically involves writing down a correct expression for the Lagrangian/Kinetic Energy.
Thanks in advance for any help.