A bead of mass m is welded at the periphery of the smoothly pivoted disc of mass m and radius R. Find the speed of the bead at its lowest position.

Dear Student,


zero rxn force means2mg=mv2Rv=2gR  velocity at top most point of the bead.conserve the energy.let the initial speed of the bead be umu22+I2uR2=mv22+I2vR2+2mgRI=mR22u2+u22=v2+v22+4mgR3u22=32gR2+4mgR3u2=6gR+8mgRu=14gR3Regards

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