PHYSICS HOMEWORK #32

Now, there is the slight complication that the pulley does exert a force on your system, but it’s safe to ignore this and just picture everything in one-dimension. There are 7 identical items, each with a equally random chance of being placed in 1 of 32 containers. Right, it’s the acceleration which is constant. Verifying Newton’s 2nd Law Ask Question. First calculate the number of ways 7 items can go into n bins, none empty, using this expansion series: Extending these general cases to particular 5, 6 and 7 bins: Note that 7 items into 4 containers is the same as rolling a 4 sided die 7 times and noting the outcome, so this method can be used for permutations or probability of rolling a die several times.

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And phhysics use this, in the middle paragraph, when you mention the 1st, 2nd, 3rd item etc. Reduce this to the situation where there are 7 items and 4 containers. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

physics homework #32

But essentially that may well have been a complication rather than a simplification – fewer steps maybe but more analysis. Note that 7 items into 4 containers is the same as ##32 a 4 sided die 7 times and noting the outcome, so this method can be used for permutations or probability of rolling a die several times. Remember we’re modelling this with bin dividers, and for 4 bins there are 3 dividers.

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Unicorn Meta Zoo 3: Corrections final terms were ok, the intemediate terms for 2of2 and 3of3 were multiplied but left inside parenthesiscorrected equations: That might be appropriate for your application; I really don’t know physicz to judge. The number of ways to do this would be 32x1x1x1x31x30x I Permutation of identical elements.

physics homework #32

What are the possible permutations? Right, it’s the acceleration which is constant. Sign up using Email and Password.

I can easily apply this to other numbers of bins, homewokr changing the number of events is a little slower. Looking at the case of 7 items into 4 bins with no bins empty there are 20 cases that fall into 3 patterns: Sorry rcgldr, I didn’t notice your link before.

What is the probabilty that containers, a, b, c end up with 1 item, and container d ends up with 4 items? A thread connected the hanging mass with the one on the track.

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The distribution of balls in the pnysics is random. Amazingly similar lines of thought. Extending these general cases to particular 5, 6 and 7 bins: Hlmework, 7 items, 4 containers.

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First calculate the number of ways 7 items can go into n bins, none empty, using this expansion series: For example, with 4 bins used: IS all that is needed to verify it?

First, your list of numbers are actually the number of ways of putting 7 distinct items, not identical items, into containers.

physics homework #32

I homeork have the hokework for this, but wondering if there’s some efficient way to calculate this. Odds versus number of draws to get 6 of 72 items. Is the logic in my first post treating the items or containers as distinct: So taking one of the cases, suppose we have bin allocations: So, I thought about this a little more, and I think some case-by-case work is probably inevitable.

The right-hand side is the total mass of the two-mass system multiplied by the its common acceleration. How do we grade questions?

homework and exercises – Verifying Newton’s 2nd Law – Physics Stack Exchange

Your logic treats both containers and objects as distinct. These numbers are way too high for a distribution of identical objects; basically you’re homweork the long way around on this problem.

Thread starter rcgldr Start date Mar 20,