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What is it about the movable pulley that causes the difference in force?

What is it about the movable pulley that causes the difference in force?
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what is it about the  movable pulley that causes the difference in force?

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User Dragonfly
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1 Answer

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There is normally friction across the pulley. If a weight is suspended by a rope, and the rope goes across a pulley, the pulley exerts friction on the rope if there is any movement, giving rise to inaccuracies in calculations.
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User Dukhabandhu Sahoo
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