Question
Two buckets of sand hang from opposite ends of a rope that passes over an ideal pulley. One bucket is full and weighs 110 N ; the other bucket is only partly filled and weighs 65 N .
You release the lighter bucket and the heavier one descends. What is the tension in the rope?
You release the lighter bucket and the heavier one descends. What is the tension in the rope?
Answers
bobpursley
sum forces: Wheavy-Wlight=(SumMasses)acceleration.
Now consider the tension to move the lighter upward
tension=Wlight+MassLight*acceleration
now consider the tension to keep the heavier from free falling
tension=Wheavy-Massheavy*acceleration
guess what? if you solve either of these, you get the same tension.
Now consider the tension to move the lighter upward
tension=Wlight+MassLight*acceleration
now consider the tension to keep the heavier from free falling
tension=Wheavy-Massheavy*acceleration
guess what? if you solve either of these, you get the same tension.
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