A certain particle having an unknown positive charge and an unknown mass was released from rest from the origin of a co-ordinate axis.The particle is subjected to a simultaneous action of a magnetic field B0k(cap) and an electric field E0j(cap).During the subsequent motion of the particle it was found that its maximum y-coordinate is y0 and radius of curvature of its trajectory at the maximum y-coordinate is R.Both E0 and B0 are positive quantities.Find the speed of the particle when its y co-ordinate is y0.ans is E0/B0(1+2y0/R)

Hrishant Goswami , 11 Years ago

Grade 10