PX154 - G3 - shear waves

now, the bar is hit on it's side
- a transverse wave is propagated along the bar
- shear modulus, $G$ [YF 11.4]
we would obtain a wave speed:

v = \sqrt{\frac{G}{ρ}}

- eg: for steel: $G = 7.7 \times 10^{10} N m^{- 2}$
- $v_{s h e a r} = 3.10 \times 10^{3}$
- slower than longitudinal waves