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JDK1.0.2 simulations (1996-2001) => kinematics => Topic started by: sakuralim on July 05, 2005, 09:31:30 pm



Title: Physical Quantities and Units (II)
Post by: sakuralim on July 05, 2005, 09:31:30 pm
HI Hi ^^
need help again

1.  The viscous drag [i:2f39b02284]F[/i:2f39b02284] on a sphere moving in a liquid depends on [i:2f39b02284]a[/i:2f39b02284], radius of sphere, [i:2f39b02284]v[/i:2f39b02284] its velocity and [i:2f39b02284]n[/i:2f39b02284] the viscousity of the liquid. Use the method of dimension to derive an equation for [i:2f39b02284]F[/i:2f39b02284] in terms of [i:2f39b02284]a, v and n.[/i:2f39b02284]

2.  The velocity of sound in medium depends on the wavelength [i:2f39b02284]L[/i:2f39b02284], Young modulus [i:2f39b02284]E[/i:2f39b02284] and density [i:2f39b02284]p[/i:2f39b02284] of the medium. Use the method of dimension to derive an equation for [i:2f39b02284]v[/i:2f39b02284] in terms of [i:2f39b02284]L, E and p.[/i:2f39b02284]

someone please help me
I will be very glad and thank you so much for your help ^^ :D


Title: topic222
Post by: Fu-Kwun Hwang on July 07, 2005, 08:24:59 am
I already show you how to do dimension analysis in another post. http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=326

Please follow the same step and try it out by yourself.
If you still have problem , please post what you have done and I will try to help you.
But I do not want to post the answer before you try it out first.


Title: I did it ^^
Post by: sakuralim on July 07, 2005, 04:13:24 pm
hehe
Well I try my best and crack my brain
at last, I understand it.
hehe
thanks to you, HWANG  :D


Title: topic222
Post by: Fu-Kwun Hwang on July 10, 2005, 03:06:52 pm
Try to find out the answer by yourself is better than view the answer from some where.
It good to hear that you understand it.