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1. Centroid of an object in a fluid

lemme rephrase that, if a object is on the incline say a circular lamina - than the centroid is the height of the object's incline divided by 2? Cheers!
2. Centroid of an object in a fluid

Hi friends just a quick question, does the centroid of an object change if it is submerged in a fluid and is on an incline? Or indeed does the centroid of an object ever change when in a fluid or inclined? Thanks! Claudius
3. U-tube manometer fluid mechanics

Hi friends - I'm at a lost on this particular problem which reads: a manometer consists of a U-tube, 7mm internal diameter, with vertical limbs with an enlarged upper end of 44mm diameter. the left-hand limb and the bottom of the tube are filled with water and the top of the right hand limb...

Anyone? :(
5. Simple fluids pressure question

back up you go :)
6. Simple fluids pressure question

Hello friends I am again in need of some asistance, The Question is as follows: The pressure head in a gas main at a point 120 m above sea level is equivalent to 180 mm of water. Assuming that the densities of air and gas remain constant and equal to 1.202 kg m^-3 and 0.561 kg m^-3...
7. Engineers bending equation

Hello friends, a question about the engineers bending equation, M/I = E/R = (sigma)/y so take for example a beam with a rectangular cross section with depth 'b'. Will y then equal b/2 ? As y is measured from the neutral axis? Thank you in advance for your time, Claudius
8. Slow test taker?

Who cares what other people think? You say you're doing well. I don't see an issue here. Different strokes for different folks.
9. How much would you pay to see Pacquiao vs. Mayweather?

This would be a great fight. Pacman's offensive ability v Floyd's defensive prowess. If it does happen though the event would be atleast a year off :(.
10. How much would you pay to see Pacquiao vs. Mayweather?

$50 - That is the market price, but if we are talking about my limit I would proabbly go$100. Is this fight happening soon is it? oh btw I prefer to watch from comfort of my home - you'd have to pay me to go to the stadium.
11. Castigliano's Theorem on Curved Beams

Hi thanks for the reply, is that (bh)^3/12 or b (h^3/12)
12. Castigliano's Theorem on Curved Beams

Can you solve for I any other way - other than using that equation without vertical deflection and or horizontal deflection?
13. Second moment of area: I

Hello my friends, so I am once again confused :frown: Is the second moment of area a universal property of a beam i.e the beams cross section? So what i mean to say is - if i have a beam and it is curved with a rectangular cross section, and take this same beam and ensure it to be now straight...
14. Castigliano's Theorem on Curved Beams

If i wanted to calculate I in this problem would it simply be as follows: I = (pi*P*R^(3)) / (2E) ? and thus substituting values in if we take E = 69 GPa R = 150 mm P = 0.1 N we get I = 1.28 *10^(-14)m^(4) The answer i get in my textbook however reads - 1.63*10^(-28)m^4 Am i...

ah ok
16. Question on notation

Note - I have already solved this question just want to know how to express that above statement in math.
17. Question on notation

Hello friends, I have this problem it reads: A random variable X is defined to be the larger of the two values when two dice are thrown, or the value if the values are the same. Find the probability distribution for X. So I don't know how to state "X is defined to be the larger of the...

Wow so neat!:cool: Handwriting that is. And the colours!
19. Hello friends,I have this problem I'm having difficulty

Thank you kind sir :)
20. Hello friends,I have this problem I'm having difficulty

Hello friends, I have this problem I'm having difficulty with, it reads - simplify the following expression ( ( x + 2 ) / (x^(2) - 2x) ) - ( (x) / (x^(2) - 4) ) it wants me to simplify it into ( 4(x + 1) ) / ( x(x - 2) ( x + 2) ) I can't get it to...
21. Simple logs question

Ahhh - off course! Thank you so much for clearing that up!
22. Simple logs question

Ok i see what you did there King - however why can I not take Ln(8) to the other side and combine using log laws? As Mute has pointed out

hmmm no...
24. Simple logs question

ok so my working is like this Ln( ((x+3) (x-4)) / 8 ) = 0 simple quadractic - solve for x i get x=4, and x =-3
25. Simple logs question

Hello friends, so i have this problem it reads: how many solutions does the following equation have Log_a(x+3) + Log_a(x-4) = Log_a(8) ok so first i put all the logs on one side of the equation and solve for x after using log laws, and i get x = 4 and x = -3, however plugging...
26. Confusing question

Hiya Hallsofivy thanks for your reply - lazy mistake on my part :yuck:
27. Confusing question

Hello friends, I have this question which stumps me because i have no idea what its actually asking for :S - it reads: calculate the value of the first derivative of f(x) = x^(2) -3x - 1/x at x = 2. In which interval does it lie? (a) -x <= x < 0 (b) 0 <= x < 4 (c)...
28. Shape of graph polynomial to the fifth degree

Ah yes :D, thank you! :approve:
29. Shape of graph polynomial to the fifth degree

Hello my friends, I have this problem and would appreciate someones help: Determine all intervals where the following function is increasing or decreasing. F(x) = -x^(5)+(5/2)x^(4)+(40/3)x^(3)+5 Solution To determine if the function is increasing or decreasing we will need the...
30. Simple bending beams question

Hello friends, so i have this problem: A beam under test has a measured radius of curvature of 300 m. The bending moment applied to it is 8 Nm. The second moment of area is 8000 mm4. Calculate the modulus of elasticity for the material. ok so using the engineers bending equation i have...