Chapter 8235P8.46(a)There is an equilibrium point wherever the graph of potential energy is horizontal:At r=15. mm and 3.2 mm, the equilibrium is stable.At r=23. mm, the equilibrium is unstable.A particle moving out toward r→∞approaches neutral equilibrium.(b)The system energy Ecannot be less than –5.6 J. The particle is bound if −≤<561. JJE.(c)If the system energy is –3 J, its potential energy must be less than or equal to –3 J. Thus, theparticle’s position is limited to 0636..mmmm≤≤r.(d)KUE+=. Thus, KEUmaxmin...=−=−−−=3026J Jaf.(e)Kinetic energy is a maximum when the potential energy is a minimum, at r=. mm.(f)−+=31JW. Hence, the binding energy is W=4 J .P8.47(a)When the mass moves distance x, the length of each springchanges from Lto xL22+, so each exerts forcekx L L
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .