Question

the bar is subjected to a steady torsional stress of 20 kpsi and an alternating bending stress of 10 kpsi

Answer 1

The bar is experiencing both torsional stress and alternating bending stress simultaneously.

Step-by-step explanation:

The bar is experiencing a steady torsional stress of 20 kpsi and an alternating bending stress of 10 kpsi. Torsional stress occurs when a twisting force is applied to an object, and bending stress occurs when an object is subjected to forces that cause it to bend or deform.

For example, think of a paperclip. If you twist it, you are applying torsional stress. If you bend it, you are applying bending stress. In this case, the bar is experiencing both types of stress simultaneously.

The torsional stress of 20 kpsi indicates that the bar is being twisted with a force of 20,000 pounds per square inch. The alternating bending stress of 10 kpsi indicates that the bar is being bent back and forth with a force of 10,000 pounds per square inch.