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M1 Pulleys (quick question)

Just a quick question can someone tell me what

'Initially, the system is held at rest with the string taut, then its released from rest.' means and what assumptions can be made?

It's the string taut part I don't understand, what is it?
Original post by Ysky
Just a quick question can someone tell me what

'Initially, the system is held at rest with the string taut, then its released from rest.' means and what assumptions can be made?

It's the string taut part I don't understand, what is it?


There's tension in the string keeping it straight and then when released this tension is gone so force no longer applies. At rest = 0 m/s.

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