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# M1 - Tension watch

1. I can't wrap my head around the fact that a "threaded" particle will have the same tension regardless of the steepness of the string at both fixed points. Can someone please guide me? this video even proves that the tension will be different https://www.youtube.com/watch?v=JUHeaZk9oNA
2. Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.

Just quoting in Danny Dorito so she can move the thread if needed
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3. (Original post by tryingtomaths)
I can't wrap my head around the fact that a "threaded" particle will have the same tension regardless of the steepness of the string at both fixed points. Can someone please guide me? this video even proves that the tension will be different https://www.youtube.com/watch?v=JUHeaZk9oNA
I think it's because the string will be inextensible, so the tensions in each part of the string will be the same. The equation for tension is kx/l where k is the constant of elasticity, if x (the extension) is zero then they will not extend. This doesn't mean the tensions will be zero but in fact, the tensions between any point cancel to zero.

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