add spring constant

tgr12001 · Feb 22, 2017 · 35dbdeb · 35dbdeb
1 parent 543fb4b
commit 35dbdeb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/HW4/README.md b/HW4/README.md
@@ -21,7 +21,7 @@ heading `# Homework #4` in your `README.md` file
 
     PE_s=1/2\*K \*(DL)^2
 
-    where DL = 0.5 - sqrt(0.5^2+(0.5-x_C)^2)
+    where DL = 0.5 - sqrt(0.5^2+(0.5-x_C)^2) and K=30 N/m.
 
     b. Use the `goldmin.m` function to solve for the minimum potential energy at xc when
     theta=0. *create an anonymous function with `@(x) collar_potential_energy(x,theta)` in