diff --git a/HW5/equations/buckle.png b/HW5/equations/buckle.png
index 0031a09..e4e6872 100644
Binary files a/HW5/equations/buckle.png and b/HW5/equations/buckle.png differ
diff --git a/HW5/equations/buckle.tex b/HW5/equations/buckle.tex
index 37e36bd..0076a93 100644
--- a/HW5/equations/buckle.tex
+++ b/HW5/equations/buckle.tex
@@ -1,2 +1,2 @@
-P_{cr}=\frac{\pi^2 EI}{4L^2}
+P_{cr}=\frac{\pi^3 Er^4}{16L^2}
 
diff --git a/HW5/equations/fx.png b/HW5/equations/fx.png
index d4d0b17..99ab00f 100644
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diff --git a/HW5/equations/reynolds.png b/HW5/equations/reynolds.png
index 2b53d3c..c877695 100644
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