A rod (mass M, length L) hinged at point X. End Y is attached to X by an elastic string passing over a pin P, the natural length of the string is L. P is a distance L from X.(adsbygoogle = window.adsbygoogle || []).push({});

Elastic Modulus of string: (1/4Mg)

Refer to GPE to X and prove that total PE is: (1/4)MgL(1-cosθ-2sinθ) and find angle θ for the equilibrium position.

http://img155.imageshack.us/img155/1247/47349211.png [Broken]

I literally have no idea where to begin with this and any help at all would be greatly appreciated.

Thank you in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Hinged rod attached to elastic string

**Physics Forums | Science Articles, Homework Help, Discussion**