Hooke’s Law

• Applying force to an object can cause it to compress stretch bend
• Deformed is when an object change shape
• Elastic deformation is when the object will go back to its original shape after applying force
• In elastic deformation or plastic declamation is when an object doesn’t return to its original shape or stay deformed
• Extension is the increase in length of a spring when it’s stretched
• When the spring is in a practical measuring the length of extension, there is a solid support an equal but opposite force, so the spring won’t fall down. Because it is balanced force
• there would be an extension without extra weight because of its own mass exerting force downwards on the spring
• As the increased force on spring, the extension increases proportionally
• The amount of extension for the same force depends on the object, spring constant
• The spring constant tells us how much newtons needed to stretch the object by 1 m
• The higher the spring constant, the stiffer the material, taking and requiring more force to stretch
• k is spring constant
• E is extension
• F is force or weight
• Elasticity is the ability of a substance to regain its original size and shape after being deformed
• In the graph, when the line is straight and passes through the origin, it shows how force and extension are proportional, positive correlation, it shows the Hooke’s law
• The straight line shows elastic deformation
• The curve line shows the elastic limit
• Elastic limit cancels out hooke’s law and object won’t go back to its original shape anymore
• Plastic deformation happens if we exceed the elastic limit