Recent content by wei7614

i got it thank you very much ~~~~ orz

i don't understand this sentence?could you teach me more detail?? thank you^^

do you mean Hamilton's equation?

yes, I'm using alpha as a variational parameter, i don't understand?

if \eta is defined constant with time , so that \frac{\partial \eta}{\partial t} = 0 ? and whether to set \eta=\eta (r,\theta,\varphi,\alpha)=\eta (r,\theta,\varphi,0)+\alpha\zeta(r,\theta,\varphi) ?

Homework Statement Assume a ball has mass "Me" and wrapped by water like ocean and Earth ,the water has mass "Mw" and density \rho ,when the ball spin with angular velocity \omega ,and the shade of system goes to ellipsoid, please expres the water depth in spherical coordinate system Homework...