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Transcript of MECHANICAL ENERGY
ROLL NO= 1-7
What Is Mechanical Energy
Mechanical energy is the sum of potential energy and kinetic energy.
It is the energy associated with the motion and position of an object.
The law of conservation of mechanical energy states that in an isolated system that is only subject to conservative forces the mechanical energy is constant.
POTENTIAL ENERGY KINETIC ENERGY
A rock has a mass of 840 kg. The centre of mass is 29.0m above ground. How much energy does it have?
What is the kinetic energy of this car having a mass of 1550kg and travelling at 38.0m/s
=(1550 kg)(38.0 m/s)2/2
1.walking and running
2.rotation and revolution of the earth
3.moving objects such as vehicles
4.moving water such as river
The energy possessed by the object by virtue of its position or change in shape is called potential energy.
Water in the lake on a mountain possesses energy because of its position.
PE= m X g X h.
In physics, the kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
1. A moving car
2. a moving ball
3. a river flowing
4. a plane in flight
5. an athlete running
Energy is defined as the capacity for a physical system to perform work .
Energy lights our cities, powers our vehicles, and runs machinery in factories. It warms and cools our homes, cooks our food, plays our music, and gives us pictures on television.
SI unit of energy is joule
TYPES OF ENERGY
CASE STUDY ON MECHANICAL ENGINEERING
Honda Motor Company, Limited is a Japanese publicmultinational corporation primarily known as a manufacturer of automobiles and motorcycles.Honda has been the world's largest motorcycle manufacturer since 1959, as well as the world's largest manufacturer of internal combustion engines measured by volume, producing more than 14 million internal combustion engines each year.
Soichiro Honda born on November 17, 1906 till August 5, 1991 was a Japanese engineer and industrialist. In 1948, he established Honda and oversaw its expansion from a wooden shack manufacturing bicycle motors to a multinational automobile and motorcycle manufacturer.
Takeo Fujisawa born on November 10, 1910 till December 30, 1988 was a Japanese businessman who co-founded Honda Motor Co., Ltd. alongside Soichiro Honda. Together, they took the company from a small manufacturer of bicycle engines to a worldwide car manufacturer.
Honda was the first Japanese automobile manufacturer to release a dedicated luxury brand, Acura, in 1986. Aside from their core automobile and motorcycle businesses, Honda also manufactures garden equipment, marine engines, personal watercraft and power generators, amongst others.
7. power equipment
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