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I know I'll probably get a bunch of "lel homework" responses but this is technically prelab work and I'm stuck.
So anyway, I'm doing a rotational motion prelab. Diagram of what the device looks like attached.
In the following problems, assume the following parameters:
Mass of the bottom steel disc: 1.4678 kg Mass of the upper steel disc:
1.4795 kg Mass of the upper aluminum disc: 0.4614 kg
Radius of each disc: 63.3 mm
Radius of the take-up spool: r = 125 cm
Mass of the falling weight: 25 grams
1. Using the values given above, calculate the following:
a) The moment of inertia of the lower, steel disc
b) The moment of inertia of the upper, steel disc
c) The moment of inertia of the upper, aluminum disc
d) The combined moment of inertia of the two steel discs
Which I found to be 2940.7kg mm^2, 2964.1kg mm^2, 924.39kg mm^2, and 5904.75kg mm^2 using moment of inertia= 1/2 MR^2 (capital M and R to denote different values from m and r to follow)
2.Using the results of problem 1, what percentage error is made by neglecting mr^2 with respect to I in the equation (mgr)/(mr^2+I) where I= Inertia
I'm not sure whether to use exact values, or to just manipulate formulas for 2. I've tried both, gotten significantly higher percent error than I should've (the check is to affirm that we can neglect mr^2 due to really low percent error). Any help would be greatly appreciated.
Euclid's algorithm in c++
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Hey /sci/, I am trying to implement Euclid's algorithm in c++ in a recursive way. However, after I insert the numbers, the .exe wont respond anymore. I am using code blocks and Win 7 x64. Anyone got a hint for me? gifs in return.
using namespace std;
int euclid(int m, int n)
cin >> m;
cin >> n;
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I need help from somebody reasonably versed in finances.
I'm working on a programming assignment for university on the subject of loan repayment schedules. Specifically, the loan in question has a principal of $200,000 and an interest rate of 0.05% over a period of monthly payment for 25 years.
Based on a formula I got from here: http://www.frickcpa.com/tvom/TVOM_PV_Annuity.asp and backed up by numerous other resources, I would have assumed the correct implementation to be:
(0.05 * 200000.0) / (1 - (1 + 0.05)^-(300))
However, this returns the value of $10000 when all loan calculators on the internet indicate, given those inputs, the payments should be $670.86. Even more troubling is that my professor seems to believe the correct output is $1169.18.
Would appreciate help on what I'm doing wrong.
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I am giving a short biographical presentation of Kelvin to my thermo class (I'm a student, not the teacher). I have lots of facts, I've done the research already, but I need something attention grabbing, like a joke (from him, not about him) or something else that will grab a bored class's attention... anyone have any ideas?
Anything related to the man is fair game, his life or work.