38. Athin wire is free to rotate in a vertical plane as shown in figure. Abead of mass 'm' slides on the wire. Lagrangian of the bead is: 37 to (a) -m[ +rở*]+ mgr cos0 (b) [+ro*]-mgr cos 0 ()+r* sin° o0°]- mgr cos0
38. Athin wire is free to rotate in a vertical plane as shown in figure. Abead of mass 'm' slides on the wire. Lagrangian of the bead is: 37 to (a) -m[ +rở*]+ mgr cos0 (b) [+ro*]-mgr cos 0 ()+r* sin° o0°]- mgr cos0
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