SCIENCE
PHYSICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Elasticity
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Stress
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Half life
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Strength
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Detailed explanation-1: -Stress is the measure of an external force acting over the cross sectional area of an object. Stress has units of force per area: N/m2 (SI) or lb/in2 (US). The SI units are commonly referred to as Pascals, abbreviated Pa.
Detailed explanation-2: -Stress is the force applied to a material, divided by the material’s cross-sectional area. Strain is the deformation or displacement of material that results from an applied stress.
Detailed explanation-3: -Strain is the response of a system to an applied stress. When a material is loaded with a force, it produces a stress, which then causes a material to deform. Engineering strain is defined as the amount of deformation in the direction of the applied force divided by the initial length of the material.
Detailed explanation-4: -This restoring force will be equal in magnitude and opposite in direction to the applied deforming force. The measure of this restoring force generated per unit area of the material is called stress. Thus, Stress is defined as “The restoring force per unit area of the material”.
Detailed explanation-5: -Pressure is external force per unit area, while stress is the internal force that comes into play from within a strain body acting transversely per unit area of the body.