fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 17 days agoSecondsmander.xyzimagemessage-square72fedilinkarrow-up11arrow-down10
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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
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