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Changes in beam momentum

  What is the change in momentum experienced by each reflected particle, tex2html_wrap_inline490 ?

From the change in momentum experienced by each incoming particle and the average rate j of approaching particles per unit time, what, in terms of N, tex2html_wrap_inline468 and k is the total rate of momentum transfer to the step?
Hint: Again, don't forget that the rate of transfer of momentum to the particles is opposite in sign to the rate of transfer of momentum to the step.



Prof. Tomas Alberto Arias
Fri Apr 25 11:25:10 EDT 1997