- #1

Callumnc1

- 865

- 100

- Homework Statement:
- Please see below

- Relevant Equations:
- Please see below

For this problem,

The solution is,

However, I don't understand why they say just before the proton escapes? Are they assuming that the B-field is only at a portion of region which means that only half or so of the circular path is within the B-field so only half of the path have a magnetic centripetal force?

If the B-field is only there for a portion of the protons path, how do they know that max speed is reached?

Many thanks!

The solution is,

However, I don't understand why they say just before the proton escapes? Are they assuming that the B-field is only at a portion of region which means that only half or so of the circular path is within the B-field so only half of the path have a magnetic centripetal force?

If the B-field is only there for a portion of the protons path, how do they know that max speed is reached?

Many thanks!