Saturday

April 18, 2015

April 18, 2015

Posted by **Clark** on Sunday, January 23, 2011 at 10:26pm.

(a) Show that can be written as

U(x) = a

--- [ ( x0/x )^2 - x0/x ]

x0^2

Graph U(x). Calculate U(x0) and thereby locate the point on

the graph. (b) Calculate v(x) the speed of the proton as a function

of position. Graph and give a qualitative description of the

motion. (c) For what value of x is the speed of the proton a maximum? What is the value of that maximum speed? (d) What is

the force on the proton at the point in part (c)? (e) Let the proton be

released instead at x1 = 3a/B Locate the point x1 on the graph of U(x)

Calculate v(x) and give a qualitative description of the

motion. (f ) For each release point ( x = x0 and x = x1 ) what are

the maximum and minimum values of x reached during the motion?

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