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But force = pressure * area. If the area is small, the downward force would also be small even though it is 40 PSI. With an area of 1 square inch, there would be a force of 40 pounds. If it's 1/10 of a square inch, it would be only 4 pounds.
But force = pressure * area. If the area is small, the downward force would also be small even though it is 40 PSI. With an area of 1 square inch, there would be a force of 40 pounds. If it's 1/10 of a square inch, it would be only 4 pounds.
I checked the downward force just after the light turns on, and it increases then. It is not when the horizontal pressure is applied but when the light turns on that that downward force increases. I can still push the top ferrule up a little but it is more difficult when the light is on.