Angle between proton velocity and B-field

Thread starter member 731016
Start date Dec 12, 2022
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Angle B-field Proton Velocity

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The discussion centers on the relationship between the angle of proton velocity and the magnetic field (B-field). It clarifies that both angles involved in the problem are supplementary, meaning they add up to 180 degrees. Either angle can be used if only the magnitude of the cross product is needed. The participants confirm the correctness of using either angle in this context. The conversation emphasizes the simplicity of the solution while addressing potential confusion.

Dec 12, 2022

member 731016

Homework Statement: Please see below

Relevant Equations: F = qV x B

For this problem,

The solution is,

However, this may seem like a silly question, but do we need both angles?

Many thanks!

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Dec 12, 2022

kuruman

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The two angles are supplementary. Either one is correct if you only have the magnitude of the cross product.

Dec 12, 2022

member 731016

kuruman said:

The two angles are supplementary. Either one is correct if you only have the magnitude of the cross product.

Thank you @kuruman !

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