the cord is unstretched and vertical.

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A horizontal plane supports a plank with a block place on it. A light elastic string is attached to the block, which in attached to a fixed point O. Initially, the cord is unstretched and vertical.
04
Oct
A horizontal plane supports a plank with a block place on it. A light elastic string is attached to the block, which in attached to a fixed point O. Initially, the cord is unstretched and vertical. A horizontal plane supports a plank with a block place on it. A light elastic string is attached to [...]
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