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Jan 9 at 18:17 comment added Tomáš Létal You need to focus on starting and ending point, it does not matter what goes on in between unless you want to take into account loses. When the weight accelerates the wheel, it will do so at the expense of its own energy.
Jan 9 at 17:04 comment added Mecky Hi Tomás, thanks for your answer. The 35kg is actually attched to the wheel by means of a wire rope and will accelerate the wheel and drop 10m. How would I account for that?
Jan 9 at 16:08 history answered Tomáš Létal CC BY-SA 4.0