Question

Integral over a volume of (mass density)$\cdot$(magnitude of displacement field)?

Answer 1

$\frac{hii \: \: \: mate \: \: }{by \: \: \: by \: \: \beta }$

Answer 2

Let u=u(X,t)=φ(X,t)−X be the displacement field. Define the quantity ψ=1/2∫ΩρuTu dX where ρ is the mass density. So if it were velocity instea