Question

State the units and dimensions of modulus of rigidity.

Answer 1

rigidity modulus= shear stress/ shear strain
unit N/m^2
ML^-1T^-2

Answer 2

Hey mate,

◆ Modulus of rigidity -
Modulus of rigidity is the ratio of shear stress to shear strain.
G = Shear tess / Shear strain

◆ Unit of G-
As strain is a unitless quantity, G has same units as of stress or pressure. i.e. Newton/Sq.meter (N/m^2).
This is also called as Pascal (Pa).

◆ Dimensions of G-
As strain is a dimensionless quantity, G has same dimensions as of stress or pressure. i.e. [ML^-1T^-2]

Hope that is useful...