Comment on Seconds

• zkfcfbzr@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  A joule is 1 Newton / second, but those units do still agree

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  • absGeekNZ@lemmy.nz ⁨2⁩ ⁨weeks⁩ ago

    A J = Ns not N/s

    One Joule of energy is one Newton of force applied for 1 second.

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    • zkfcfbzr@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      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.

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      • absGeekNZ@lemmy.nz ⁨2⁩ ⁨weeks⁩ ago

        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

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  • mvirts@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

    Lol wait is a joule actually one Newton meter? 😅

    Now I’m so confused

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    • zkfcfbzr@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      You’ve got it - it is a Newton-meter

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