Physics

Problem

Two particles, each carrying the same positive charge

q

, enter the same uniform magnetic field

B

with identical speeds at right angles to the field. Particle 2 has twice the mass of particle 1. Which statement about the radii

r_1

and

r_2

of their circular paths is correct? a)

r_2 = r_1

r_2 = \sqrt{2}\,r_1

r_2 = 2 r_1

r_2 = \dfrac{r_1}{2}