Pulley with Mass/Friction

[sugarbabee0]

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Does the MCAT test on pulley systems that the pulley itself has mass or friction?

EDIT: And also, what about the half-life of rates for reactions in general chem (something like t(1/2) = ln[A]...)?

Thanks

 

[Rabolisk]

I don't think so. I wasn't tested on such a system in my physics class either, so I can't imagine the MCAT would have it.

 

[GRod18]

that half life equation is a waste of time, unless u just want to learn it.

You can do half life just as fast by doing basic arithmetic. 50-25-12.5... etc etc.

 

[sugarbabee0]

that half life equation is a waste of time, unless u just want to learn it.

You can do half life just as fast by doing basic arithmetic. 50-25-12.5... etc etc.

No, not diving the mass by half as in basic math; I mean: ln[A] = ln[A]0 - kt and t1/2 = ln2/k... and I believe it is different for the second order and so on.

 

[Rabolisk]

Extremely unlikely to be useful on the mcat, although I could see a graph being in a passage about kinetics. You should be able to derive it by integration if the need rises though.