Question

The strain energy stored in a body due to a suddenly applied load compared to when it is applied gradually is

• A. Two times
• B. Three times
• C. Four times
• D. No Change

Hint:

When a load is applied suddenly, the strain energy stored in the body is higher compared to when it is applied gradually.

Answer 1

The Correct Option is C

Step 1: Understand the concept of strain energy.
Strain energy is the energy stored in a material due to deformation. If the load is applied suddenly, the strain energy stored is higher than when the load is applied gradually because the gradual loading allows the material to undergo deformation more slowly. Step 2: Derivation.
For a sudden load, the strain energy is four times the energy stored when the load is applied gradually, as the gradual loading follows a more stable path. Final Answer: \[ \boxed{4 \text{ times}} \]