#stupid mechanics question fml

24 messages · Page 1 of 1 (latest)

compact fox
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Yh I'm basically clueless does anyone know how to do b onwards 🤡🤡

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warm yarrow
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Tbh you’ll have hard luck having help with this rn, not a lot of us do OCR and it’s completely different wording than what I’m used to at least

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I can help with part c though

compact fox
warm yarrow
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Yeah of course

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So there’s two parts you need to consider : when Q is being affected by tension and then when it is not

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It is no longer affected when P hits the ground

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So it travels 1.75m up before there is no tension

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You need to find it’s velocity at that time

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And then do a suvat eq

compact fox
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because its the same situation replicated with p is 1.75. m above ground

warm yarrow
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Think about it, what would cause the tension?

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If p is sat on the ground, what is causing tension as Ps mass and the reaction force from the ground are equal

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And P has no acceleration

compact fox
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oh, ohhh ok

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ty im actually done for, for eoys!

compact fox
warm yarrow
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No it wouldn’t

compact fox
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because when it comes momentarily to rest is when it goes up by 1.75

warm yarrow
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That’s how far Q has travelled under tension

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It comes momentarily to rest above that as it still has acceleration

compact fox
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oh, ok!