Recent content by Bravemeister

A u tube open at both ends and a uniform cross section contains a mas of mercury,m and a density of 'rho' if the level is slightly disturbed show the surface oscillates with a periodic time of Tn=2pi sqrt[(m/2g'rho'a)] where a is the cross sectional area. i understand how to do this...

sorry for the horrid spelling my tablet keyboard is crap

well how to do it, in my lecture notes I says to take moments about a point, so I chose to go about point A. so from that I drew a moment polygon. I need to find sommething called a closing vectpr, I presume so thwt from point C I cwn return to point A therefore using some angles and other maths...

Figure Q4. illustrates a rotor assembly with out-of-balance rotor discs in planes A, B and C. The out-of-balance mass x radius products in planes A and C are as indicated in the figure. The out-of-balance mBrB in plane B and its angular position \ThetaB are such that the system is in static...