Ans: Stress is the measure of restoring force per unit area .
Is restoring force always equal to deforming force?
Yes, the restoring force will be equal to the deforming force once equilibrium is reached . But before that, the deforming force will be greater than the restoring force, and deformation will occur then. Once equilibrium is reached, no more deformation occurs.
What is known as restoring force?
In physics, the restoring force is a force which acts to bring a body to its equilibrium position. The restoring force is a function only of position of the mass or particle, and it is always directed back toward the equilibrium position of the system. The restoring force is often referred to in simple harmonic motion .
What is meant by stress in physics?
Stress, in physical sciences and engineering, force per unit area within materials that arises from externally applied forces, uneven heating, or permanent deformation and that permits an accurate description and prediction of elastic, plastic, and fluid behaviour.
Which type of force is stress?
Stress is a physical quantity that defines force per unit area applied to a material. ... The maximum stress of material can stand before it breaks is called the breaking stress or ultimate tensile stress. Tensile means the material is under Tension. The forces acting on the material are trying to stretch the body.
Is stress a uniform?
Stress as a tensor field
In general, stress is not uniformly distributed over a material body , and may vary with time.
What is formula of stress?
stress = (elastic modulus) × strain .
Why is it called restoring force?
The spring force is a restoring force because it always applies a force towards the equilibrium point . When the mass reaches the equilibrium point on its way back to where it started, there will be no restoring force on the mass.
What is the formula of restoring force?
The simplest oscillations occur when the restoring force is directly proportional to displacement. In this case the force can be calculated as F=-kx , where F is the restoring force, k is the force constant, and x is the displacement.
What is difference between deforming force and restoring force?
Deforming Force is defined as the property that causes the shape and size of the body to change over time. Deforming Force Types: When a force is removed, elastic deformation is reversed . ... A restoring force is a force that causes a physical structure to return to equilibrium.
Is restoring force always negative?
The restoring force is the force that brings the object back to its equilibrium position. The restoring force acts in the direction opposite to the displacement. Hence restoring force is negative .
What are two conditions that are required for a restoring force?
The restoring force must be proportional to the displacement and act opposite to the direction of motion with no drag forces or friction. The frequency of oscillation does not depend on the amplitude.
What are the 3 types of stress?
Common types of stress
There are three main types of stress. These are acute, episodic acute, and chronic stress . We explore each type of stress below.
What is stress diagram?
A stress strain diagram or stress strain curve is used to illustrate the relationship between a material’s stress and strain . ... Stress strain curves visually display the material’s deformation in response to a tensile, compressive, or torsional load.
What is unit for stress?
Stress has units of force per area: N/m 2 (SI) or lb/in 2 (US) . The SI units are commonly referred to as Pascals, abbreviated Pa.
