A wildfire is approaching a window. A sheet of insulated material(non flammable) is being adhered to the window using suction cups. The Fire is 1000 F max..the windows maximum temperature heated temp is 300F but only avg 100F for first 20 minutes..Will the suction cups pop off in first 20 minutes...? At all? Would size of cup make a difference..
2007-07-22 16:16:58 · 2 answers · asked by d k 1 in Science & Mathematics ➔ Physics
This is a very complicated question. As the suction cups heat up, any air stuck between the cups and the window will try to expand. Simultaneously, the coefficient of friction between the suction cup material and the window will change in a non-linear way, and the stiffness of the material (which creates the low-pressure zone that sticks it to the window) will also change, even if the material doesn't melt.
In short, the problem is so complex that you'd get better results just doing the experiment rather than trying to figure it out analytically.
2007-07-22 16:29:33 · answer #1 · answered by lithiumdeuteride 7 · 0⤊ 0⤋
Atmospheric pressure around the suction cups may be reduced slightly but 100 f is not a very high temperature, the cups will hold the load.
2007-07-26 06:54:58 · answer #2 · answered by johnandeileen2000 7 · 0⤊ 0⤋