Answer:
Specific stiffness=37.95 GPa
Step-by-step explanation:
Given that
Volume fraction of tungsten V₁ = 0.9
Volume fraction of copper V₂ = 0.1
Specific gravity for tungsten S₁ = 19.3
Specific gravity for copper S₂= 8.9
Modulus of Elasticity for tungsten E₁= 407 GPa
Modulus of Elasticity for copper E₂ = 110 GPa
Modulus of Elasticity for mixture
E= E₁V₁+E₂V₂
E = 110 x 0.1 + 407 x 0.9 GPa
E=377.3 GPa
Specific gravity for mixture
S= S₁V₁+S₂V₂
S = 19.3 x 0.1 + 8.9 x 0.9
S=9.94
Specific stiffness K


K=37.95 GPa
Specific stiffness=37.95 GPa