The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise boosts blood flow, releases endorphins, and promotes changes in the brain which help regulate emotions and stress levels.
The document discusses determining the modulus of elasticity of materials. It defines modulus of elasticity as a material's stiffness and describes how it relates stress and strain based on Hooke's law. Two common methods are described: tensile tests which apply stretching forces and bending tests which apply flexural stresses. Both methods use extensometers like strain gauges to precisely measure deformations. The modulus of elasticity is then calculated as the slope of the stress-strain curve or the ratio of stress to strain from experimental data points.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise boosts blood flow, releases endorphins, and promotes changes in the brain which help regulate emotions and stress levels.
The document discusses determining the modulus of elasticity of materials. It defines modulus of elasticity as a material's stiffness and describes how it relates stress and strain based on Hooke's law. Two common methods are described: tensile tests which apply stretching forces and bending tests which apply flexural stresses. Both methods use extensometers like strain gauges to precisely measure deformations. The modulus of elasticity is then calculated as the slope of the stress-strain curve or the ratio of stress to strain from experimental data points.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
