Question:
A proton projected in a magnetic field of $0.020 \mathrm{~T}$ travels along a helical path of radius $5.0 \mathrm{~cm}$ and pitch $20 \mathrm{~cm}$. Find the components of the velocity of the proton along and perpendicular to the magnetic field. Take the mass of the proton= $1.6 \times 10^{-27} \mathrm{~kg}$.
Solution:
