Explain Mechanical Energy Class 9 The document provides a detailed lesson plan for a Grade 9 science class on energy transformation The objectives are for students to understand and explain conservation of mechanical energy and energy transformation in various activities
Energy is defined as the ability to do work Its unit is the same as that of work Energy is a scalar quantity SI unit of energy or work Joule Nm or Kgm2s 2 Energy has different forms Light heat chemical electrical or mechanical To know more about Energy and Its Types visit here Objects in motion possess energy and can do work Mechanical energy It is the energy possessed by a body due to its position or motion Suppose you notice a book lying on a table Do you think it possesses any kind of energy
Explain Mechanical Energy Class 9
Explain Mechanical Energy Class 9
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The energy possessed by a body on account of its motion or position is called mechanical energy Kinetic Energy The energy of a body due to its motion is called kinetic energy LAW OF CONSERVATION OF MECHANICAL ENERGY If conservation forces are acting on a body or on a system then the sum of kinetic energy and potential energy mechanical energy of the body or of the system will be conserved
Mechanical Energy The sum of kinetic energy and potential energy is called mechanical energy Energy can neither be created nor destroyed it can only be transformed from one form to another The total energy before and after transformation remains the same Mechanical Energy The capacity to do mechanical work is called mechanical energy Mechanical energy is of two types a Kinetic energy b Potential energy Mechanical Energy Kinetic Energy Potential Energy When do we say that work is done Define one joule of work
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Mechanical Energy It is the energy possessed by a body due to its position potential energy or motion kinetic energy The sum of these two energies is called mechanical energy Solar Energy The energy radiated by the Sun is called solar energy Plants collect and store this energy to make food through photosynthesis Chemical Energy Can any object have mechanical energy even if its momentum is zero Explain Ans Yes mechanical energy comprises of both potential energy and kinetic energy Zero momentum means that velocity is zero Hence there it no kinetic energy but the object may possess potential energy Q Can kinetic energy of a body be negative Q
Mechanical energy is the energy of an object due to its position or motion It is the basis of physics as everything around us is driven by mechanical energy From picking up objects to throwing them mechanical energy can be seen in action every day 5 Mechanical Energy The sum of an object s kinetic and potential energy is called its mechanical energy 6 Power Power is the rate at which work is done Formula Power Work Time Unit The SI unit of power is the watt W where 1 watt 1 joule per second 1 W 1 J s
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The document provides a detailed lesson plan for a Grade 9 science class on energy transformation The objectives are for students to understand and explain conservation of mechanical energy and energy transformation in various activities
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Energy is defined as the ability to do work Its unit is the same as that of work Energy is a scalar quantity SI unit of energy or work Joule Nm or Kgm2s 2 Energy has different forms Light heat chemical electrical or mechanical To know more about Energy and Its Types visit here Objects in motion possess energy and can do work
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Explain Mechanical Energy Class 9 - LAW OF CONSERVATION OF MECHANICAL ENERGY If conservation forces are acting on a body or on a system then the sum of kinetic energy and potential energy mechanical energy of the body or of the system will be conserved
