Question

Consider the following relation for the torsional stiffness (Кт)

1.$K_T=\frac {T}{\theta}$

2.$K_T=\frac {GJ}{L}$

3.$K_T=\frac {G\theta}{L}$

• A. (1), (2) and (3)
• B. Only (1) and (3)
• C. Only (1) and (2)
• D. Only (2) and (3)

Answer 1

Answer:

B. Only (1) and (3)

The torsional stiffness $(K_{T})$ can be calculated using three equations:$K_{T} = T / \theta, K_{T} = GJ / L_{1}$ and $K_{T} = G\theta / L$ The correct options are (1) and (2). Torsional rigidity is the torque per unit angular twist per unit length, represented as $GJ = T / (\theta / L)$