Identify the false statement regarding the factors affecting the torsional resistance of a shaft. The torsional resistance is directly proportional to which of the following?

Explanation

Torsional resistance depends on the material's modulus of rigidity (shear modulus), the angle of twist, and is inversely proportional to the shaft length. However, it is not directly related to the moment of inertia (second moment of area) of the shaft's cross-section, which is a property more relevant to bending resistance.