You are not logged in.

#1 2010-01-23 21:39:14

platyfish99
New Member
Registered: 2010-01-23
Posts: 2

Equilibrium from a Ceiling using cosines!

A rod with a length of .5m and mass of 10 kilograms is suspended from a ceiling by two strings which have lengths of .42m (L2) and .29m (L3). Solve using the laws of cosines.
I have found the angles, A , B, and C.
Once at equilibrium what is the elevation angle theta from the x-axis to the rod?
What are the tensions in the two strings?
Diagram:: http://picasaweb.google.com/lh/photo/sa … directlink

2. Relevant equations
c2 = a2 + b2 – 2ab cos C
a2 = b2 + c2 – 2bc cos A
b2 = a2 + c2 – 2ac cos B.

Torque equations, force equations...
3. The attempt at a solution
Angles:
A = 35.48
B = 87.41
C = 56.99


Warning: is_dir() [function.is-dir]: open_basedir restriction in effect. File(/f1/content/ilovephysics/public/forum/uploads/) is not within the allowed path(s): (/f2/ilovephysics/:/nfsn/apps/php5/lib/php/:/nfsn/apps/php/lib/php/:/nfsn/content/content/nfsn/) in /f2/ilovephysics/public/forum/include/image_upload/image_upload.php on line 30

Offline

 
Your Ad Here

Board footer

Powered by PunBB
© Copyright 2002–2005 Rickard Andersson