This is not my problem, it's a friends but I have no idea how to tackle it:(adsbygoogle = window.adsbygoogle || []).push({});

A block B of mass 5 kg is fastened to one end of each of two springs. The other ends of the springs are attached to fixed points A and C, 4 metres apart on a smooth horizontal surface, as shown in the diagram.

Spring AB has natural length 2 metres and modulus of elasticity 30 N, while BC has natural length 1 metre and modulus 40 N (you may assume that the springs meet at the centre of B).

Find the total elastic potential energy of the system in this position.

He knows it is something to do with:

[tex]\frac{\lambda_{AB} X_{AB}}{l_{AB}}=\frac{\lambda_{BC} X_{BC}}{l_{BC}}[/tex]

Can you help please in pointing him in the right direction (I'll give him the link to this thread)

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

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

# Homework Help: Total Elastic Potential Energy

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