Question

1.

What condition or conditions are necessary for static equilibrium?

A) Σ Velocity = 0

B) Σ Force = 0, Σ Torque = 0

C) ΣX = 0

D) ΣX = 0, Σ Velocity = 0

2.

1) Stress is … 2) Strain is…

A) 1) the strain per unit length. 2) the applied force per unit length.

B) 1) the same as force. 2) the ratio of stress to elastic modulus.

C) 1) the ratio of the change in length to area. 2) ) the stress per unit area.

D) 1) applied force per cross-sectional area. 2) the ratio of the change in length to the original length.

Answer 1