Question

what is strain in physics ?

Answer 1

Answer:

When a body is subjected to a deforming force, a restoring force occurs in the body which is equal in magnitude but opposite in direction to the applied force. This restoring force per unit area is known as stress. We can also refer to stress as a measure of the internal force experienced by an object per unit of cross-sectional area.

is the force applied and AA is the area of cross-section of the body, then

\text{Magnitude of stress}=\dfrac{F}{A}=\dfrac{\text{Force}}{\text{Area}}.

Magnitude of stress=

A

F

=

Area

Force

.

SI unit of stress is N \ m^{-2}N m

−2

or pascal (Pa)(Pa) and its dimensional formula is [ML^{-1}T^{-2}][ML

−1

T

−2

] .

Explanation:

Types of stress:

Longitudinal stress, which consists of tensile stress and compressive stress

Tangential or shearing stress

Hydraulic stress

What is stress and strain in physics?

A change in shape due to the application of a force is a deformation. ... Very elastic materials like rubber have small k and thus will stretch a lot with only a small force. Stress is a measure of the force put on the object over the area. Strain is the change in length divided by the original length of the object.

Answer 2

$\bold\pink{Question}$

what is strain in physics ?

$\huge\mathit\green{Answer}$

• Strain is simply the measure of how much an object is stretched or deformed.
• Strain occurs when force is applied to an object. Strain deals mostly with the change in length of the object.

$definition -$

When a body is subjected to a deforming force, a restoring force occurs in the body which is equal in magnitude but opposite in direction to the applied force.

1. This restoring force per unit area is known as stress. ...
2. Strain is simply the measure of how much an object is stretched or deformed.

Hope it's helpful for you .

$\huge\bold\purple{Thanks}$