Rubber, also called India rubber, latex, Amazonian rubber, caucho, or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. Thailand and Indonesia are two of the leading rubber producers. Types of polyisoprene that are used as natural rubbers are classified as elastomers.
Currently, rubber is harvested mainly in the form of the latex from the rubber tree (Hevea brasiliensis) or others. The latex is a sticky, milky and white colloid drawn off by making incisions in the bark and collecting the fluid in vessels in a process called "tapping". The latex then is refined into rubber that is ready for commercial processing. In major areas, latex is allowed to coagulate in the collection cup. The coagulated lumps are collected and processed into dry forms for sale.
Natural rubber is used extensively in many applications and products, either alone or in combination with other materials. In most of its useful forms, it has a large stretch ratio and high resilience, and also is water-proof.
Hi all. I have a question. How do you show the difference between stress (pressure) and force? We were given 2 short elastic bands, 2 long elastic bands, and 2 paper clips. Idea that came up was to tie one elastic band to 1 weight (anything). Suspend it. And measure length of elastic band. Then...
a 2kg block hangs from a rubber cord. the block is supported so that the cord is not stretched. the unstretched length is .5m and its mass is 5g. the spring constant is 100 N/m. The block is released and stops at the lowest point. a) determine the tension in the cord when the block is at this...
I have a circular motion lab, in which we spin a rubber stopper attached at one end and a mass at the other end of a string. We calculate the period by the recording the time it takes for 20 revolutions. And we figure out the force Fc.
So we do three different graphs:
one for Fc vs...