A static rope, by definition, will not stretch. It may lengthen if being everloaded, but under normal conditions there is no stretch.
Dynamic climbing rope stretches when it is loaded, so for a climber this means that when he falls, the rope will stretch a little as weight is applied, making a fall softer and safer. A static climbing rope does not stretch and has its advantages in situations where you need a rope that does not stretch or give, such as rappelling or caving use. A static rope should not be used by climbers who are lead climbing because taking a fall on a static rope can lead to serious injury to the climber or even cause the rope to snap as it does not properly absorb the force it needs to cushion a fall.
A static rope is a type of rope that does not stretch when a load is applied to it, making it ideal for activities where minimal elongation is desired, such as rappelling, caving, and rescue operations. It is designed to provide stability and safety when used for activities that require little to no dynamic movement.
All rope stretches because it consists of materials at an angle to the load putting tension on the rope, and they try to straighten when pulled. How much the rope can stretch, and at what point the stretch weakens the rope, depends upon the materials used and the rope construction - laid up or braid, and the combinations of these.
differentiate between a dynamic stretch reflex and a static stretch reflex
Static rope is commonly used in outdoor activities and rescue operations for tasks that require minimal stretch, such as rappelling, ascending, and hauling heavy loads. Its low elasticity provides stability and safety in situations where dynamic movement is not desired.
static stretching is stretching without movement.
Static
In abseiling, a static rope is used primarily for its low stretch properties, providing a secure and stable means of descent. The rope is anchored at the top of the descent point, allowing the climber to safely rappel down while maintaining control over their speed using a belay device. Its rigidity helps prevent excessive bounce or shock loading, which is crucial for safety during the descent. This makes static ropes ideal for controlled descents in climbing, caving, and rescue operations.
10 to 11 mm static rope
I don't know how much stretch you mean. In my experience nylon rope can be stretched a small amount.
static
First off, there are static and dynamic ropes. Static ropes do not stretch and are mostly used for rappelling, hauling, fixed lines, and probably some other stuff I do not know about. This is because none of these activities involve large forces - such as what would be created during a fall. Dynamic ropes stretch, and are the main type of rope used for rock climbing. This is because they stretch to absorb the shock of the climbing rope. In fact, if I remember correctly, some rock climbing ropes can stretch to as much as 30% more than it's original length. Dynamic ropes come in a wide range of diameters and can also be divided into three categories - single ropes, half ropes, and twin ropes. One would choose a certain diameter and type of rope based on the activity they plan on doing.