Recent content by tomcenjerrym

  1. T

    How Does Gravitational Acceleration Affect a Helicopter's Upward Motion?

    I don’t know that… The book doesn’t say anything about that… We are student forced to understand but we aren’t understood.
  2. T

    How Does Gravitational Acceleration Affect a Helicopter's Upward Motion?

    I am confuse with the following Kinematics problem PROBLEM A helicopter accelerates uniformly upward at 1m/s^2 to a height of 300 m. Determine the time required for this motion. SOLUTION s = 300 m v0 = 0 a = 1 m/s^2 v = v2 s = (v0) (t) + (1/2) (a) (t^2) 300 m = 0 + (1/2)...
  3. T

    Need advice on Numerical Methods Book

    I need 1 of the following 2 Numerical Methods books. Can anyone advice me which one do you think is best? Numerical Methods for Engineering Application, 2E Joel H. Ferziger ISBN 0471116211 John Wiley & Sons Numerical Methods, 3E J. Douglas Faires, Richard L. Burden ISBN 0534407617...
  4. T

    Which Fluid Mechanics Book is Best for Beginners?

    Hi Everyone, Well, I just want to ask… Which of the following 2 Fluid Mechanics books is good for Beginner: Title: Fluid Mechanics, 4th Ed. Author: Irving Granet ISBN: 0133521702 Publisher: Prentice Hall Title: Principles of Fluid Mechanics Author: Andreas Alexandrou ISBN...
  5. T

    Question on Fluid Dynamics book

    Hi All, Does anyone here can advise me which of the following Fluid Dynamics is good for Beginner? Title: An Introduction to Fluid Dynamics: Principles of Analysis and Design Author: Stanley Middleman ISBN: 0471182095 Publisher: Wiley Title: Fluid Dynamics: Theoretical and...
  6. T

    Which Fluid Mechanics Book is Best for Beginners?

    Hi, Does anyone know which of the following 2 Fluid Mechanics books the best is for beginner? FIRST Title: Elements of Fluid Mechanics Author: David C. Wilcox ISBN: 1928729177 Publisher: DCW Industries SECOND Title: A Physical Introduction to Fluid Mechanics Author: Alexander J...
  7. T

    It looks simple, but I can’t do it

    Can anyone help me how to make the following equation each variable x and y together with dx and dy respectively? y'=\frac {(4x^2 + y^2)} {xy} Thanks in advance
  8. T

    Mathematica Plot diagram in Mathematica question

    Can anyone help me how to plot the attached image of diagram in Mathematica 6? Thanks
  9. T

    The best physics magazines and the best physics books?

    I am planning to purchase 1 Physics book. Can anyone here suggest me which one of the following texts is best? Title: PSSC Physics, 7E Author: Uri Haber-Schaim Publisher: Kendall Hunt Title: Foundations of Physics Author: Robert Gowdy Publisher: Kendall Hunt Title: Physics - An...
  10. T

    Solving Stiffness Matrix: Multiplication & Addition of Matrices

    All of forces fx and displacements dx magnitude. Please look at my attached image for the system. Note that the magnitude of f3 = 10 kN/m and the displacement of node 1 and 5 is 0 also the magnitude of k1 is = k2 = k3 = k4 = 20 kN/m.
  11. T

    Solving Stiffness Matrix: Multiplication & Addition of Matrices

    I spent almost 2 days to solve the following stiffness matrix \left(\begin{array}{c}f1\\f2\\f3\\f4\\f5\end{arr ay}\right)=\left(\begin{array}{ccccc}20&-20&0&0&0\\-20&40&-20&0&0\\0&-20&40&-20&0\\0&0&-20&40&-20\\0&0&0&-20&20\end{array}\right)\left(\begin{array}{c}0\\d2\\d3\\d4\\0\end{arr...
  12. T

    Can These Matrices Be Multiplied?

    What is \left(\begin{array}{ccc}1&1&2\\0&2&1\\1&0&3\end{array}\right)\left(\begin{array}{cc}1&1\\3&3\end{array}\right)? I'm so confuse because the first matrix is 3 columns matrix and the second matrix is 2 rows matrix. Thank you
  13. T

    What is the inverse of f(x) = x^3 + 2x?

    What is the inverse of this function f(x) = x^3 + 2x? *************************************** f(x) = x^3 + 2x y = x^3 + 2x interchange x \Leftrightarrow y x = y^3 + 2y and it's a dead end to me ...
  14. T

    FIRST: Highest & Lowest Root of f(x) = x^2 - 2x + 1

    Why? Is it about interval?
  15. T

    FIRST: Highest & Lowest Root of f(x) = x^2 - 2x + 1

    Sorry for not being careful. Now I understand what is meant by HIGHEST and LOWEST root. Say, for the following equation: f(x) = x^2 - x - 6 The highest root is x = 3 and lowest is x = -2. In case of f(x) = x^2 - 2x + 1 or f(x) = (x - 1)^2 there is no highest and lowest root because the only...
Back
Top