fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 17 days agoSecondsmander.xyzimagemessage-square72fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1imageSecondsmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 17 days agomessage-square72fedilink
minus-squaremvirts@lemmy.worldlinkfedilinkEnglisharrow-up0·17 days agoE=mc^2 so m is joule seconds^2 / meter ^ 2 F=ma so m is Newton seconds^2 / meter A joule is 1 Newton / meter so they agree
minus-squarezkfcfbzr@lemmy.worldlinkfedilinkEnglisharrow-up0·17 days agoA joule is 1 Newton / second, but those units do still agree
minus-squaremvirts@lemmy.worldlinkfedilinkEnglisharrow-up0·17 days agoLol wait is a joule actually one Newton meter? 😅 Now I’m so confused
minus-squarezkfcfbzr@lemmy.worldlinkfedilinkEnglisharrow-up0·17 days agoYou’ve got it - it is a Newton-meter
minus-squareabsGeekNZ@lemmy.nzlinkfedilinkEnglisharrow-up0·17 days agoA J = Ns not N/s One Joule of energy is one Newton of force applied for 1 second.
minus-squarezkfcfbzr@lemmy.worldlinkfedilinkEnglisharrow-up0·17 days agoMuphry’s law at work - for both of us, actually. I looked it up (since with Ns the units no longer worked out between E = mc² and F = ma), and a joule is actually a Nm, a Newton-meter. And with that the units do work out correctly on both equations.
minus-squareabsGeekNZ@lemmy.nzlinkfedilinkEnglisharrow-up0·17 days agoThat is really unintuative, torque is Nm…how can energy also be Nm. But then I look at it and J = Ws = N(m/s)s = Nm
Shouldn’t m = F/a so n/s^2?
E=mc^2 so m is joule seconds^2 / meter ^ 2
F=ma so m is Newton seconds^2 / meter
A joule is 1 Newton / meter so they agree
A joule is 1 Newton / second, but those units do still agree
Lol wait is a joule actually one Newton meter? 😅
Now I’m so confused
You’ve got it - it is a Newton-meter
A J = Ns not N/s
One Joule of energy is one Newton of force applied for 1 second.
Muphry’s law at work - for both of us, actually. I looked it up (since with Ns the units no longer worked out between E = mc² and F = ma), and a joule is actually a Nm, a Newton-meter. And with that the units do work out correctly on both equations.
That is really unintuative, torque is Nm…how can energy also be Nm.
But then I look at it and J = Ws = N(m/s)s = Nm