Recent content by robip

Ok I needed a fair amount of safety, so I used worst case scenarios of Cp being 2.5J/kg.K and Vap being approx 600kJ/kg. The specific gravity was 0.6. I calculated it to being approx. 30kJ. Does that sound correct?

Homework Statement I have liquid natural gas, or LNG, at -165degrees Celsius. I want to know the total energy required to heat the gas up 50ml to 5 degrees Celsius. Homework Equations Not sure. Im assuming I need information regarding specific heat etc. Heat of vaporization maybe...

hmmm i just realized it is also asking for the axial load to be included in the equation, how would i calculate the axial load at any point with respect to angle theta?

oh yea, i see, thanks so much for the help! really appreciated

i can't believe i didn't notice all my values were out by about 3... :smile: so for the horizontal i would just use Cos instead right?

ok i am completely stuck, i have no idea how to work this out

http://img245.imageshack.us/img245/6836/questionhp8.th.png Here is a pic of it

Well here is how I got it: M(theta)=L*R*Sin(theta) dM/dL=RSin(theta) dV=dU/dL=d(int(M^2/(2*E*I)*r*dTheta,Pi->0)/dP =1/EI * int(M*dm*R*dTheta,Pi->0) Substituing values for M(theta) and dM PR^3/EI * int(sin^2(theta)dTheta,Pi->0) dV=PR^3/2EI

Homework Statement You have a semi-circular cantilever with a point radial load at its free end. i.e load acting down from top of semi circle, with bottom attached to something. Calculate the equations for the horizontal and vertical deflections taking into account both bending moments...

thanks I will give it a go and get back, I am assuming that the center of mass would be through the axii of symetry and 3/8th's the radius i.e x0,y0,z3r/8

Homework Statement A solid hemi-sphere of radius r rests on a hard flat surface. If rolled slightly in 1 direction and released, the hemisphere will rock from side to side, assume no slipping. Write an expression for the kinetic energy of the hemi-sphere during the small amplitude motion...