The discussion revolves around a problem involving thermal expansion, specifically focusing on a brass rod and a copper sheet with a hole. Participants are exploring the temperature change required to close a gap created by the differing thermal expansion of the two materials.
The discussion is ongoing, with participants seeking clarification on the formula and its application. Some guidance has been offered regarding the correct equation for thermal expansion, but there is no consensus on the understanding of the concepts involved.
Participants are grappling with the implications of the large dimensions given in the problem, which may affect their understanding and approach to the thermal expansion concepts being discussed.
That's some rod, if it has a diameter of over 16 meters!Brian13 said:Homework Statement
A brass rod (linear expansion coef 19*10-6/°C) has a radius of 8139 cm and a copper (linear expansion coef 17*10-6/°C) sheet has a hole or radius 8139+8.86cm. What temperature change (K) is required to close the gap?
Homework Equations
ΔL/Lo = αΔT?
The Attempt at a Solution
I'm not even sure if the equation is right, so I'm really confused. Thanks for the help!
Please say in words your understanding of the concept of thermal expansion.Brian13 said:I'm not entirely sure. I don't really understand the formula, so I'm having a hard time really wrapping my mind around it. I don't know what the L represents.