Recent content by MechaMZ

Hi, i hope someone can kindly give me some opinions for my idea :) I've a project related to vortex induced vibration. The prototype has a cylinder submerging into moving fluid, and it generates a upward/ downward motion in cycles. I want to measure the efficiency of my prototype, which...

or i should use an energy conservation method?

Homework Statement [PLAIN]http://img87.imageshack.us/img87/9964/impactforceonbike.png A roller is rolling with a constant speed before and after the drop. How do i figure out the impact force exerted on the wheel when it just touch the floor from a height h? Assume, angular velocity...

it is about 2 meter in length

exit and entrance effects?

Hi, I've did an experiment today, a forced convection in circular tube where the heat flux is constant along the length. my result seems not follow what it should be.. [PLAIN]http://img688.imageshack.us/img688/8015/expresult.png what I'm wondering is shouldn't it in a fully...

[PLAIN]http://img814.imageshack.us/img814/3943/fluidmechanics.jpg Please let me know is my assumption correct? P1 = P2 = P4 = P5 = Atmospheric pressure P2 not equal to P3, and P3 is not under the atmospheric pressure. P2 not equal to P3 even are the same fluid, is because of the...

anyone can help in this question??

Homework Statement Let's say the surface of the fluid is very big as compare to the tube diameter. Are my assumptions below correct? VA=0 VB(inlet of the tube) = VE, i think so because the diameter of the tube is constant. And the velocity through the tube all are constant. or...

anyone knows? perhaps i attach a picture to explain the motion better. http://img97.imageshack.us/img97/4315/rotation.jpg

Hi, could anyone help me to figure out the reason? I still don't get it =(

Homework Statement A 2 kg disk traveling at 3 m/s strikes a 1 kg stick of length 4 m that is lying flat on nearly frictionless ice .Assume the collision is elastic and the disk does not deviate from its original line of motion. Find the translational speed of the disk, the translational...

I think my problem is I don't understand between work done, kinetic energy, and potential energy.

why we no need to include the \Delta U? What if the object is in a falling motion with air resistive force acting on it. Could i write it as: mg(\Delta h) - Ffriction(\Delta h) = \Delta K + \Delta U or i should write it as without taking the work done by gravitational force: -...

Homework Statement May i know how do i compute an energy conservative equation for the scenario below, which i don't understand. If a book is lifted up by a force in order to make it moving upward with a constant velocity. For conservation of total energy, W1-2 = U1-U2 = K2 - K1 If the...