AAMC Physics Self Assessment #100

[moto_za]

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Attached is the question with the figure. Why is the answer not D? Wouldn't adding a solid increase it rather than decrease it? How did you go about solving this question? The AAMC explanation does not make much sense to me. TIA

 

[moto_za]

Bump 🙂

 

[sazerac]

So you are suggesting that adding more mass and more inertia to a system should make it accelerate faster? Like if I welded a 500lb manhole cover to my bicycle's rear wheel, the bicycle should suddenly become much easier to get up to speed???

 

[milski]

I don't really get the question - the second image is clipped and there is some talk about current and magnetic fields. You may want to take a screenshot from the whole thing.