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M1 Moments watch

1. (Original post by thefatone)
so when Rp=0 does that mean that when i take moments about A i ignore Rp since it's 0 and use 8mgx+30mgd=14mg
(Original post by Zacken)
Yes, but it's not =14mg, you forgot to multiply by the distance of Q from A.
And that error would lose all of the marks for the equation, since it is dimensionally incorrect.
2. (Original post by Zacken)
Yes, but it's not =14mg, you forgot to multiply by the distance of Q from A.
oh of course, seems like i'm forgetting everything today since it's friday
3. (Original post by tiny hobbit)
And that error would lose all of the marks for the equation, since it is dimensionally incorrect.
Ouch. But yeah, checking if the dimensions is correct is a good way to sanity check your answers, I found.
4. (Original post by tiny hobbit)
And that error would lose all of the marks for the equation, since it is dimensionally incorrect.
(Original post by Zacken)
Ouch. But yeah, checking if the dimensions is correct is a good way to sanity check your answers, I found.
i got 3.25d metres is that wrong?
5. (Original post by thefatone)
i got 3.25d metres is that wrong?
Uh, yeah I think I get the same.
6. (Original post by Zacken)
Uh, yeah I think I get the same.
Thanks so much
7. (Original post by thefatone)
Thanks so much
No problem.

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