Friction, Spring Constant, Energy

  • Thread starter euphtone06
  • Start date
  • #1
22
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Homework Statement


http://img339.imageshack.us/img339/4518/phys2lh6.gif [Broken]


Homework Equations


W= -um2gh
m1gh=.5Kh^2-um2gh
.5K(h)^2
Final Eq?:
W=um2g*(2g(m1+um2)/K)


The Attempt at a Solution


.2(4)9.8*(2*9.8(7+.2(4))/9 = 133.1754667
I dont know if I went wrong in manipulating the equation but I suspect thats the issue?
 
Last edited by a moderator:

Answers and Replies

  • #2
22
0
Sorry to bother you guys again but if I could please get some help tonight it would be much appreciated it must be turned in early tomorrow.
 

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