Not directly related to this thread, but made interesting reading for a current problem I had with a part of an automotive engine, alloy timing chain housing, a stud sheared off and in our trade we have always applied heat to the alloy to try and loosen the stud/bolts, but in this example the...
I have what I think for me is an interesting subject, which deserves some thought about how to correctly calculate the force acting on a Otto cycle piston, and whether that force is from compression pressure, or the force acting from the crank and conrod.
You have an engine running and...
Sorry that is my fault:eek:
P = pressure, but the equation is using more than one pressure which is why there are two "P"'s present, so (P - P atm) is saying that one pressure could be say liquid and then the other P atm is the atmospheric pressure. Also "A" is considered in this equation to...
PA- P atm A= K
P(A- atm A)= K
P= k/(A- atm A)= k/(A(1- atm)).
12 - 6= 3(4)- 3(2)= 3(4- 2). Where did the second "3" go? That is the distributive law: ax+ ay= a(x+ y).
The above distributive law is ok, but my example I feel you have misunderstood it:frown:
If "P" referred...
Hi everyone, could someone please advise;
The equation;
PA - P atm A = K, change in X
If I wish to factor this equation to get "p" on its own, then;
PA - P atm A = K, change in X
= A ( P - P atm)
so the conclusion I draw is;
(P - P atm)A = K, change in X...
It's only my view, but then one can only give an opinion of their own view?
My experience through life has shown me that any individual person always wants to be somebody else?
Why?
Education to me has been designed to lead people to a conclusion, to direct them to a certain type of...
Hi Office_Shredder. Please stick with the original equation as the "learner" that's "me" is trying to achieve the understanding of the idea of "Factorisation" from first principles, therefore if you expand with more ideas before I gain the basics, I will be lost:confused:
Let's start with my...
Hi All, this is not homework, just some basic revision for my own personal understanding, it's a long time since I went to school?
I would like to refresh my mind on the following algebra please.
4ax + 2ay = 2a x 2x + 2a x y
= 2a(2x + y)
Sorry for not using the DOT...
Hi Nick,
Thank you for your advice, much appreciated. I think I have made most of it out, but on the far left before the = signs the writing is a little difficult to read.
Thanks
David:smile:
Hi tiny-tim
Thank you for your advice and input to my "lack of understanding" the equation?
I always seem to rememeber "Transposition of formula" when I think something needs to be moved or changed, what I never remember is "Factorisation" which is what you have just explained:smile...
Hi tiny-tim.
Let's stay with the original equation. We have;
PA - P atm A = K spring, change in X.
Notice the equation above is like a see saw where the pivot is the equals sign "=". On the left hand side we have; PA - P atm A. And on the right hand side we have; K spring, change in X...
yes I agree, but my understanding is that when using transposition of formula, what you do to one side you do to the other, so as I invented A on the right hand side, then I must invent "A" on the left hand side when I divided both sides, but when cancelling like terms on the left hand side, one...
Hi tiny - tim, this is how I get the different answer.
PA - P atm A = K spring change in X (divide both sides by A)
P - P atm A = K spring/A multiply by change in X (now put in data)
(600 000 - 100 000)pi x 0.05 squared = 4800 / pi x 0.05 squared. multiplied by change in X...
Hi tiny-tim, just having to nip out now for about an hour, will check your response when I return. Thank you very much for both your patience and your help, much appreciated.
David
Hi tiny-tim
if you divide both sides by A, you will end up with 4800/pie x A on the right hand side, which then shows a different solution.
Thanks
David:smile: