Force is proportional to the extension of the spring, but in the opposite direction to the extension.
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Replying to @christianjbdev
Thank you! But how do we find out what the extension is from the mass and the constant?
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Replying to @HPluckrose
Well, what's the problem? Mass hanging on a spring in equilibrium?
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Replying to @christianjbdev
Oh I can't get a screenshot of it on her laptop! She's been asked to work out an equation that requires knowing the mass, the constant and the extension but has only been given the first two.
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Replying to @HPluckrose
(((Christian JB))) 🐌 Retweeted (((Christian JB))) 🐌
It's probably this problem.https://twitter.com/christianjbdev/status/935240875675979777 …
(((Christian JB))) 🐌 added,
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Replying to @christianjbdev @HPluckrose
Just solve via dimensional analysis!
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Replying to @salonium @christianjbdev
I have no idea what is going on. I think Lucy knows what she doesn't know but she's shit at explaining it to me! If that problem comes up in the test, she's just going to have to leave it.
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Dimensional analysis is a cool trick where you take your givens and calculate other necessary values out of them. Like turning distance (m) and time (s) into velocity (m/s)! Tons of physics problems require it.
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OK. I'm just getting blankness.
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