Young's Modulus

• Young's modulus is the ratio of stress to strain
• Young's modulus determines how stiff a material is
• Stiffness is the resistance to deformation
• Stress is the force per unit area when equal opposing forces act on a body
• Strain is the extension per unit length due to applied stress
• Ultimate tensile strength is the maximum stress a material can withstand before breaking
• In the elastic region, the object will return to its original shape when load is removed
• In the plastic region, the object will not return to its original shape when load is removed
• A higher spring constant means a steeper gradient
• Hooke's law is obeyed up to the limit of proportionality
• Elastic limit is the maximum pressure a material can withstand before deformation