Does stretching increase resistance?

The study found that a regular stretching program may actually enhance performance, making people stronger and increasing their endurance.

Can you stretch electrical wire?

Such incidences may become a lot less common, however, as scientists from North Carolina State University have created conductive wires that stay intact even when stretched up to eight times their regular length. …

What is the effect on resistance and resistivity of a wire when it is stretched to double its length?

As the length of wire gets doubled, the cross-sectional area will become half of its previous value because volume of wire remains constant. Hence, we can see that the new resistance is four times the previous resistance.

What happens to the resistance and resistivity of a wire in the following cases 1 i wire is cut into two equal halves?

resistivity is constant and resistance is half. In case 2, resistance is constant and resistivity is half.

What does resistance training do?

Resistance training increases muscle strength by making your muscles work against a weight or force. Different forms of resistance training include using free weights, weight machines, resistance bands and your own body weight. A beginner needs to train two or three times per week to gain the maximum benefit.

Does resistance training help with flexibility?

Contrary to common gym lore, resistance training does not reduce flexibility. When an exercise is performed properly, through a full range of motion, it will actually help increase your flexibility.

What can be stretched into a wire?

Ductility is the quality of being pliable and flexible, like a piece of metal that can be bent into a thin wire. Metals like silver, lead, and copper have ductility — a metalsmith can bend, hammer, and even stretch these materials without breaking or shattering them.

Can stretch into wires science?

Researchers from North Carolina State University have created conductive wires that can be stretched up to eight times their original length while still functioning. Michael Dickey, an assistant professor of chemical and biomolecular engineering at NC State and co-author of a paper on the research.

How does stretching increase the resistance of a wire?

As others have pointed out elsewhere, stretching increases length and at the same time reduces cross sectional area, increasing the resistance by the square of the increased length. The resistance of a wire is inversely proportional to its area and directly proportional to its length.

What happens when you stretch a copper wire?

Therefore, if you stretch a (Copper) wire its cross sectional area A will decrease and length l will increase, both causing an increase in resistance R. Resistivity is a constant for Copper.

How do you find the resistance of a wire?

Resistance is directly proportional to the length of the wire, and inversely proportional to the cross sectional area of the wire. R = pl/A, where R is resistance, p is the material’s resistance in ohms, l is the length, and A is the cross sectional area in m^2.

What happens when a conductor is stretched to double its length?

However, if a conductor ( say copper, because that’s what I know about) is stretched to double its length, the metal will harden from the process of diameter reduction and lengthening. This is, in fact, the process for making wire…. the diameter is reduced while the wire is pulled and stretched through a steel or diamond drawing die.