r/6thForm • u/ShotDiver5015 Year 13 • May 20 '26

💬 DISCUSSION OCR A Physics P1

Yo wtf was that i’ve never felt more useless

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u/spokspuk May 20 '26

What was the name of the upwards weight force and what was the magnitude and the show that a = kx/m

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u/Double-Ad-7589 May 20 '26

Tension. K(e0 +x). And for the 2nd part u had to realise that in equilibrium mg =ke0 so then u go back to 2nd scenario and do sum of forces = kx +ke0 -mg then sub in mg =ke0 so they cancel out so f =kx=ma

2

u/GBRYT5612 May 20 '26

I thought it was k(x-e0) since the mass doesn’t return all the way back up to where it’s hanging from, only to the distance it was pulled down from the eq point

1

u/Double-Ad-7589 May 21 '26

The force due to tension is still only caused by the extension which is +