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Pressure is the external force acting over a unit surface area of a material. Stress is an internal force acting over a cross sectional area within the material. It may also be thought of as the internal resistive response of a material to the applied external pressure. They both have the units of force / area.
think it as-
suppose we have a cubical solid mass. we apply external force of few magnitude on it and this force will try to deform the cube. at the same instant an internal force will generate within the cube that will try to maintain the shape and size of the cube i.e. this internal force will work against the applied external force. this induced force within the cube is stress.
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What is the difference between stress and pressure?
Stress is a response to external factors that can be emotional or physical, while pressure is the expectation or demand to perform well in a situation. Stress is the feeling of being overwhelmed, while pressure is the external force that pushes someone to achieve a certain goal.
What is the difference between pressure and stress, and how do they affect the behavior of materials?
Pressure is the force applied on a material per unit area, while stress is the internal resistance of a material to deformation. Pressure can cause materials to compress or expand, while stress can lead to deformation or failure. Both pressure and stress can affect the behavior of materials by changing their shape, strength, and ability to withstand external forces.
What is the difference between pressure and stress, and how do they impact the human body differently?
Pressure is the external force or demand placed on an individual, while stress is the body's response to pressure. Pressure can be positive or negative, while stress is typically negative. Pressure can motivate and drive performance, but excessive stress can lead to physical and mental health issues. The impact on the body differs as pressure can be managed and controlled, while stress can overwhelm the body's coping mechanisms and lead to negative health outcomes.
What is the difference between differential pressure and static pressure in a fluid system?
Differential pressure is the difference in pressure between two points in a fluid system, while static pressure is the pressure at a single point in the system.
What best describes the difference between differential stress and confining pressure?
Differential stress refers to the unequal forces acting on a rock that can result in deformation, while confining pressure refers to the uniform pressure applied from all sides on a rock mass. Differential stress can lead to the formation of geological structures like faults and folds, while confining pressure contributes to rock recrystallization and solid-state deformation.
