5.3.4 Work Done on a Spring

Springs

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Key Points

To stretch, bend, or compress an object, more than one force must be applied.
If a single force is applied, the object will move in the direction of the force rather than changing shape.
To stretch an object, forces must be applied in opposite directions on either side.
If an object is fixed at one end and a force is applied at the other, the fixed point provides a counteracting force, allowing the object to stretch.

Deformation

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Deformation refers to a change in the shape of an object due to the application of forces.

Types of Deformation

Elastic Deformation:

The object returns to its original shape after the force is removed.

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Example: An elastic band stretches when pulled and returns to its original shape once the pulling force is removed.

Plastic Deformation:

The object does not return to its original shape after the force is removed, leading to a permanent change.

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Example: A spring that has been stretched too far and does not return to its original length.

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