newtonian mechanics - When we do pull-ups, does the bar takes more weight than when we hang down on the bar? - Physics Stack Exchange

When I do pull-ups, I feel I push down to the bar. But does the bar really take more weight than just hang down? For people who don't know pull-ups and hang down, here is an illustration. Left: H

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newtonian mechanics - For weighted pull ups, how does positioning the weight below the hips (eg a dip belt) make the motion harder than when placed on the back (eg a bag)?)

How come when a pulley increases the force you put in, it doesn't work in reverse with the force the object is also pulling down? - Quora

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How does the tension in the rope of a pulley becomes different if we use a weight to lift another weight instead of using lifting force? - Quora

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