eku_girl83
Feb26-04, 09:10 PM
Here's my problem:
A particle with charge 4.5E-19 C travels in a circular orbit with radius .465 m due to the force exerted on it by a magnetic field with magnitude 1.7 T and perpendicular to the orbit.
a) What is the magnitude of the momentum p of the particle?
I used the equation R=(mv)/(qB) and calculated mv (linear momentum) to be 3.6E-19 kg*m/s.
b) What is the magnitude of the angular momentum L of the particle?
Herein lies the rub! Angular momentum = v/R = qB/m
I don't know velocity or mass independently, only their product (mv). So how do I calculate angular momentum?
Thanks for any help!
A particle with charge 4.5E-19 C travels in a circular orbit with radius .465 m due to the force exerted on it by a magnetic field with magnitude 1.7 T and perpendicular to the orbit.
a) What is the magnitude of the momentum p of the particle?
I used the equation R=(mv)/(qB) and calculated mv (linear momentum) to be 3.6E-19 kg*m/s.
b) What is the magnitude of the angular momentum L of the particle?
Herein lies the rub! Angular momentum = v/R = qB/m
I don't know velocity or mass independently, only their product (mv). So how do I calculate angular momentum?
Thanks for any help!