Hookes law

Under these conditions the object returns to its original shape and size . Learn about elasticity and how to determine the force exerted by a spring. The law is named after 17th century British physicist Robert Hooke, who sought to demonstrate the relationship between the forces applied to a . Any physicist knows that if an object applies a force to a spring, then the spring applies an equal and opposite force to the object. It is said to be more elastic if it restores itself more precisely to its original configuration.

A rubber band is easy to stretch, and snaps back to near its original length when release but it is not as elastic . In equation form, we write. The proportionality constant k is specific for each spring. The object of this virtual lab is to determine the spring constant k. Stretch and compress springs to explore the relationships between force, spring constant, displacement, and potential energy! Investigate what happens when two springs are connected in series and parallel.

A secondary school revision resource for AQA Additional GCSE Science about forces, elasticity and thier effects.

Since the torque generated by the coiled spring is proportional to the angle turned by the wheel, its oscillations have a nearly constant period. Schematic of a polymer nanospring. It states that within the limit of elasticity, the stress induced (σ ) in the solid due to some external force is always in proportion with the strain (ε ). Consider a spring with a spring constant k that is stretched with a . We will begin our discussion with an investigation of the forces exerted by a spring on a hanging mass. Consider the system shown at the right with a spring attached to a support.

The spring hangs in a relaxe unstretched position. If you were to hold the bottom of the spring and pull downwar the spring . Stress applied on a solid is directly related to the strain developed on that object. Force applied on a spring is directly related to the displacement, which is caused by the force. A law in physics stating that. Let $x$ be the extension of the spring: i. Obviously, $x$ can also be used as a coordinate to determine the horizontal displacement of the mass.

Stress: force exerted per unit area of surface on an extended object. Isotropic means that it has equal stiffness in every direction. It is in fact the 1st order linearization of any hyperelastic material Law, including nonlinear ones, as long as the Law is.

Pulling or pushing a spring away from its equilibrium ( resting) position requires a force to be applied. When the spring is held at a distance x from its equilibrium position, the spring exerts a restoring force in the negative x direction. For many springs, the restoring force is proportional to the distance . Almost any object that can be distorted pushes or pulls with a restoring force proportional to the displacement from equilibrium towards the equilibrium position, for very small displacements.

However, when the displacements become large, . This slide talks about elastic limit for tensile strains in a wire, but the same principle works for any kind of stress. A paper clip, for example, springs back into its original shape unless it is bent beyond an .