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What is a pulley  A pulley is a wheel with a flexible rope, cord, cable, chain, or belt that runs along its edge. Dots can be utilised alone or in groups to impart energy and movement. Bundles are the patches around the waist. The points are coupled to the shaft on its axis in the belt drive, and power is delivered between the shafts by an infinite belt that runs through the points. A pulley is a mechanical device that makes it easier to lift heavy objects. The dots have a rotating wheel on an axle, which is connected to the centre of the wheel by a rope, cable, or chain. Fixed, moving, and compound spots are the three major types of spots.  A fixed point's wheel and axle are fixed in place, and the best example of one is a flag pole: as you pull down on the rope, the force is redirected via the point, and you lift the flag up.  Use of Pulley Use of pulley infographic The pulley's initial purpose was to make lifting large objects simpler. A spot is a basic machine consisting of

Historical Background and Discovery of Cell - Class 11 Biology Aristotle (384-322 B.C.) and Paracelsus, two ancient Greek philosophers, believed that the complex structure of animals and plants is made up of a few repeating elements. These were an organism's macroscopic structures, such as roots, leaves, and flowers for plants, and organs for animals. Conrad Gesner (1516-1565), a Swiss biologist, researched the structure of a kind of protists termed foraminifera after the introduction of magnifying lenses in 1558. The compound microscope, invented in 1590 by Francis Janssen and Zacharias Janssen, aided in the advancement of cell biology research. Marcello Malpighi (1628-1694), an Italian microanatomist, examined thin slices of animal tissues from organs such as the brain, kidney, spleen, and lungs, as well as plant tissues, and proposed that they were made up of structural units he called "utricles." Cell was coined by Robert Hooke (1635-1703), an English microscopist (c

What are Renewable and Non-renewable Resources Class 8  Natural resources are resources that are found naturally on the globe. Natural resources are divided into two categories: biotic (living) and abiotic (non-living) (non-living). Plants, animals, birds, and marine life are all biotic (life things). Abiotic elements include minerals, air, sunlight, and water (non-living substances). All of these resources have a wide range of applications. Fruits, vegetables, flowers, rubber, paper, medicine, and other resources are all provided by plants. Cleaning and drinking are just two examples of how water is used. Sunlight, on the other hand, may provide solar energy. Plants provide oxygen and carbon dioxide to humans through photosynthesis. For diverse machines, various fossil fuels, such as gasoline and coal, are employed as "energy sources." Renewable  Resources  Renewable resources include water, wind, tides, the earth, ocean currents, biomass, and so on. All of these items are f

Traffic Signals Worksheet - Class 2 EVS What are the messages from the traffic lights? A traffic light is a yellow pole that reflects different colored lights. Each of the traffic light's colors conveys a particular meaning. Let's look at the meanings of the various colors - The RED light indicates that we should come to a halt. All cars on the road must come to a complete stop behind the pedestrian crossing whenever the traffic lights turn red. Pedestrians can use the zebra line to cross roadways while the traffic lights are red. The YELLOW light indicates that we should wait and watch until it turns GREEN. As soon as the yellow traffic lights change GREEN, we should get our automobiles ready to proceed. The GREEN light tells us it's time to leave. As soon as the traffic lights turn green, you should proceed. 1. Write the meaning of the signs given below: 2. Complete the words by looking at the pictures below: _U_     B_C_C_E  _R_IN  3. Write down have many wheels does th

Essay on Indian Farmer Farmers in India are the country's economic backbone. Without farmers, the Indian economy would be unable to continue and flourish for an extended period of time. Farmers are the persons who cultivate the essential food grains and commodities for human sustenance. Because India is a land of villages and our economy is heavily reliant on our farmers, it is vital to look after them. Many Indian families engage in farming, a traditional industry that allows individuals to make a decent livelihood while also meeting their fundamental wants and desires. Farmers are also considered as the backbone of the Indian economy, as they provide the majority of the country's food. Every citizen in the country is reliant on the agricultural products produced by farmers. Many farmers are relocating to cities in search of a more stable source of income that would enable them to properly feed their family. Farmers contribute so much to the economy, but they continue to be

Class 10 Science - Human Excretory System  The excretory system is a part of a live organism's body that disposes of waste. Organs of the human excretory system include: A couple of kidneys A ureter is a tube that connects the kidneys to the bladder. The bladder of the urinary system A urethra is a tube that connects the bladder to the urine A couple of kidneys Each person is born with two kidneys. On either side of the backbone are the kidneys, which are bean-shaped organs. The kidneys are protected by the ribs and back muscles. Each adult human kidney measures 10-12 cm in length, 5-7 cm in width, and weighs 120-170 grammes. Renal Capsule is a type of capsule that is used to treat kidney problems The fibrous tissue that surrounds the kidney is referred to as the renal capsule. The renal cortex and renal medulla are two zones on the interior of the kidney. The outer layer of the kidney is the renal cortex, while the inner layer is the renal medulla. Renal columns run between the m

 What is The Earth In The Solar System- NCERT Class 6 Social Science   Earth is the  third planet from the sun, and it is the only one with a free- oxygen atmosphere, oceans of water  on its surface, and life. Earth is the fifth-largest planet in the solar system. Our solar system is made up of the Sun, the eight planets, and their moons, as well as smaller planetary objects including dwarf planets, comets, and meteoroids. In these notes, we will learn the topic The Earth In The Solar System  from chapter 1 out of class 6 social science.   Introduction Galaxy: It is a huge system of billion stars and clouds of dust and gases. Millions of such galaxies make a universe. The solar system is the part of Milky way. Milky way : It is the part of pace with tons and tons of stars crowded together. This crowd of stars looks like the spilled milk and named the Milky Way. Ancient Indians named the Milky way as Galaxy. Celestial Bodies : It refers to the sun, the moon, and all shiny objects in the

Notes for Class 6th Science Motion and Measurement of Distance   From Chapter 10 Class 6 Science, we will learn Motion, Types of Motion, Distance Measurement, a Normal Unit of Measurement, and SI Unit of Length in these notes.   Stationary object Stationary objects are those objects that remain fixed and do not move from one place to another.   Motion   They can travel in contrast to objects that stay stationary, such as trains, buses, animals, and humans. An object is said to be in motion when its location changes with respect to time. For instance, if the location of a bus changes over time, the bus is said to be in motion. The bus, for example, departs at 6 a.m. and arrives at the Mumbai station at 11 a.m. It is in motion at that time. Types of motion   1 Rectilinear motion- It is related to when an object’s motion is in a straight line in a fixed direction. For example, a bus moving in a straight line. 2 Circular motions The motion which repeats itself after a fixed interval of tim

Plant Cells – Definition, Diagram, Structure & Function   In all organisms, the cell is the essential unit of life. Plants, like humans and animals, are made up of several cells. Around the plant cell, there is a cell wall that helps the plant cell maintain its form. Other organelles exist in addition to the cell wall and are associated with various cellular activities.   What is a Plant Cell? “Eukaryotic cells with a true nucleus that carry out certain specific functions along with specialized structures called organelles.” Plant cells differ from other eukaryotic species in many main ways. Plant and animal cells both have a nucleus, as well as other organelles. One of the distinguishing features of a plant cell is the presence of a cell wall outside of the cell membrane.   Diagram of a Plant Cell   The plant cell is rectangular in shape and is slightly larger than the animal cell. Plant and animal cells are both eukaryotic and have a few cell organelles in common, but plant cells

What are Road Safety Rules and Traffic Signs in India?   Highways and transportation have become an integral part of life for everyone in today's world. Anyone who uses the road in any way is a road user. While the modern mode of transportation has shortened distances, it has also increased the risk of death on the other hand. Every year, road accidents claim the lives of thousands of people and cause serious injury to millions more. Every year, approximately 1.3 million people die and 20-50 million people are injured on the world's roads. Road traffic deaths are a significant cause of death in all age groups, and they are the leading cause of death for children aged 5 to 29 years and young adults. The risk of dying in a traffic accident is more than three times higher in low-income countries than in high-income countries. Each year, approximately 80,000 people are killed in road accidents in India, accounting for 13% of all fatalities worldwide. The driver of the car plays an

CBSE & NCERT Maths Worksheet For Class 1 Worksheet for class 1 Maths : Our free online mathematics worksheets are a great way for first-graders to study and practice math. Introduce and study addition and subtraction fact families for first graders with these free and printable mathematics worksheets.   This free 1st-grade mathematics worksheet allows your child to practice math strategies. To help your child understand addition and subtraction, use a free printable mathematics worksheet for first grade.   This fun first-grade mathematics worksheet shows your kid how additions, multiplication, division, and subtractions of the numbers actually work.   1. What comes before :   a. _____9 8   b. _____ 55   c. _____ 64   d. _____9 9     2. What comes after:   a. 9 ______   b. 30 ______   c. 56 ______   d. 89 ______     3. What comes between :   a.  99 ______ 101           b. 90 ______92   c. 59 ______61   d. 55 ______57     4. Addition   a. 55 + 57 =   b. 35 + 17 =   c. 10  + 22  =   d