The formula for knowing stress is:

Question

Question

This question was previously asked in

RPF SI (2018) Official Paper (Held On : 13 Jan 2019 Shift 3)

Answer 1

The Correct answer is Force / Area.

Key Points

Stress is defined as the internal force per unit area that resists a change in shape or size of a body.
The formula for calculating stress is Force / Area. This is denoted as σ = F / A.
Units of stress are typically Pascals (Pa) in the International System of Units (SI).
Stress is a measure of the intensity of the internal forces acting within a deformable body.
Stress can be categorized into different types such as tensile stress, compressive stress, and shear stress.
Understanding stress is crucial in fields like mechanical engineering, civil engineering, and material science to ensure structural integrity.

Additional Information

Force / Mass
- This formula is incorrect for stress but is relevant for calculating acceleration using Newton's second law of motion (F = ma).
Mass / Area
- This formula is not related to stress but rather to surface density or area density, which measures the amount of mass per unit area.
Force / Time
- This formula is unrelated to stress. It could relate to the concept of impulse in physics, defined as the change in momentum over time.