Originally Posted by
StephenH
He is taking a reduction in tension to mean an uplift, which it is not.
Of course it is an uplift. If you were hanging from a rope tied to a tree branch in danger of breaking off, you wouldn't be arguing if a helpful chap was giving you an uplift such that the branch stayed intact. That uplift would transfer to the branch right through the rope, even though everybody "knows" you can't push a rope.
Now ignore the direction that gravity gives that scenario, and you have the wheel's situation.