When the trebuchet is fired‚ the weight box falls‚ and the force of gravity causes rotational acceleration of the attached throwing arm around the axle. The sling is attached to the end of the throwing portion of the throwing arm (opposite the counter weight portion). The sling contains the projectile and thrusts the projectile forwards. The sling also changes the trajectory‚ so that‚ at the time
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comes from the Greek word for papyrus. Papyrus was ahead of its time‚ more so than the Mesopotamian method of writing on clay tablets. Egyptians made the design of the chariot better by making it lighter and faster and changing the position of the axle. Mesopotamians didn’t even have experience with horses until they were invaded by the Assyrians in 1400 BC. Egyptians built the Great Pyramids of Giza‚ which is the
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TATA MOTORS –An Introduction "Best in the manner in which we 0perate‚ best in the product we deliver‚ and best in 0ur value system and ethics." Tata Motors Limited‚ previously Tata Engineering and Locomotive Company (TELCO) is an Indian international automobile assembling organization head quartered in Mumbai‚ Maharashtra‚ India and a subsidiary of the Tata Group. Its things join voyager cars‚ trucks‚ vans‚ mentors‚ public transports‚ development supplies and military vehicles. It is the world’s
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INTRODUCTION: ENERGY FROM THE SUN The sun has produced energy for billions of years. Solar energy is the sun’s rays (solar radiation) that reach the earth. Solar energy can be converted into other forms of energy‚ such as heat and electricity. In the 1830s‚ the British astronomer John Herschel used a solar thermal collector box (a device that absorbs sunlight to collect heat) to cook food during an expedition to Africa. Today‚ people use the sun’s energy for lots of things. Solar energy can
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Evaluation paper 10-26-10 Trophy Trucks are the fastest class of off-road racing vehicles which are designed and built to resemble modern pickup trucks. Although any truck that meets the safety standards can race the trophy truck class‚ they‚ for the most part‚ feature long travel suspensions and high power engines. They are intended for desert racing‚ and are not street legal. Trophy Trucks can reach speeds in excess of 135 miles per hour even over rough terrain. This puts them among the fastest
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How are men important to the women’s work of producing bundles at the time of a death? Making large amounts of yams is entitled mainly to the woman wealth. The men helping in producing the bundles are important because she knows to produce many bundles she must receive yams form her husband brother. This helps secure the wife wealth from the husband each year that his sister is given yams from her brother Why are these bundles important? Bundles are important because not only do they put them in
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Inspiring Courage from Stacey: Many people must face courage by being bullied‚ just because of the color of their skin. In Mildred D. Taylor book Roll of Thunder Hear My Cry‚ Stacey had to show courage by the bus Trench‚ and T.J.’s cheat notes. Stacey is the oldest Logan kid‚ he feels that he is the man of the house when papa is at the railroad. Would you rather almost get ran over by a bus or would you do something about that would get you in trouble? Stacey had an plan to stop that bus from
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All people ‚eventually‚ will have to stand when others sit and mindlessly toy with the idea of courage‚ in other words everyone will be or has been courageous at one point in time. In Mildred Taylor’s book‚ Roll of thunder hear my cry‚ Stacey is faced with many challenges throughout the book. The book is set during the 1930’s in the south where racism runs rampant‚ and with all this racism an African American thirteen year old boy is not going to get treated very well. This character has to show
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Isaiah Nields Mrs. Ellis Physical Science 8th December 16‚ 2012 “Types of Catapults” * Trebuchet- “The word "Trebuchet" is originally French‚ and meant something like "to fall over or rotate about the middle" as in a see-saw rotating on its axle. It also seems to have meant a big‚ heavy beam. Today a Trebuchet is any kind of catapult that is powered by a massive counterweight on one end of an arm‚ and a sling on the other end. This includes Perriers‚ or "traction" trebuchets which are powered
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Early versions‚ such as Packards in the fifties‚ utilized torsion bar rear springs. Ride height was adjusted by rotating the anchored end of the bar with a starter-type motor‚ a gearbox and heavy bell crank linkage. Since the weight on the front axle doesn’t change much‚ the motor solenoid was controlled with a simple mercury switch mounted parallel to the frame rail‚ acting as the rear height sensor. Simple load-leveling suspensions today use air-adjustable springs or shock absorbers‚ an onboard
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