The conversion of mechanical energy into heat. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
Directory / Entertaining experiences / Experiments in physics

The conversion of mechanical energy into heat. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

If a body can do work, then the body is said to have energy. Since prehistoric times, people have experimentally achieved the transformation of one type of energy into another. Noticing that the body heats up from friction, people used this property to make fire by rubbing two dry pieces of wood against each other.

The law of transformation and conservation of energy, the basic law of nature, was first established in science by the brilliant Russian scientist M.V. Lomonosov. This law states: the energy that bodies possess is neither created nor destroyed, but only in various natural and technological phenomena it passes from one form to another.

Make a few simple experiments that confirm this law.

Take a thin piece of metal or a coin. Press it firmly against the dry plank and move it vigorously back and forth across the wood. It is unlikely that you will do 15-20 movements, since the metal will heat up so much that it will burn your finger. By striking iron on flint, you can knock out sparks. In both of these cases, you observe how mechanical energy is converted into thermal energy.

Heat, as we know from numerous steam engines and engines, can again provide us with mechanical and other forms of energy.

If you have a thin-walled brass tube, closed at one end, in the form of a cylinder of small diameter, you can do another interesting experiment on the transition of mechanical energy into thermal energy.

Take a cylinder, fill it almost to the top with water, preferably hot, then the experiment will turn out faster. Plug the open hole tightly with a wooden plug. Fix the cylinder vertically or horizontally, but firmly, in a fixed position. Take a thick rope. Put on the cylinder and quickly, with pressure, drive the rope along the cylinder.

The conversion of mechanical energy into heat

Water, even if it was initially cold, will heat up from the friction of the rope against the metal, boil, and the steam will throw the cork out. Of course, stand up yourself so that you do not get a jet of steam.

We recommend interesting experiments in physics:

▪ Soap bubble electrification

▪ Tireless dancers

▪ We heat the needle

We recommend interesting experiments in chemistry:

▪ Bones - in business

▪ Extraction of chlorophyll with alcohol

▪ Plants release oxygen when they breathe.

See other articles Section Entertaining experiences at home.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Nanotubes repel water 06.04.2004

Trying to create the perfect water-repellent coating for clothing, car windshields or aircraft wings to prevent them from icing, MIT researchers have grown a dense layer of carbon nanotubes and coated their tops with Teflon.

A drop of water on such a surface forms an almost perfect ball and easily rolls off. True, this superhydrophobic coating is still rather unstable and easily erased.

Other interesting news:

▪ AUO to release 4,3-inch AMOLED panels

▪ Mars changes the structure of near-Earth asteroids

▪ Cells increase in volume when tissues are bent

▪ Elephant sleep

▪ Kingston HyperX DDR4 memory modules

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Computer devices. Article selection

▪ Megar's article. Popular expression

▪ article What ensured the operation of the windshield washer in a Volkswagen Beetle? Detailed answer

▪ Kufelka's article. Legends, cultivation, methods of application

▪ article AC solid state relay 400 V/100 mA 5P50F. Encyclopedia of radio electronics and electrical engineering

▪ article Organization and operation of electrical installations. Electrical management. General provisions. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews