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Question
What is meant by mechanical energy? State its two forms.
What is meant by mechanical energy? State its two forms.
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Solution
Mechanical energy is the sum of energy possessed by a body by virtue of its position and motion.
That means, ME = PE + KE
There are two formss of mechanical energies.
Potential energy: Energy of the body by virtue of its position. PE of a body of mass m at a height h from the surface of earth is, mgh. (g is acceleration due to gravity)
Kinetic energy: Energy of the body by virtue of its motion. KE of a body of mass m moving with speed v will be, (1/2)mv2.
Mechanical energy is the sum of energy possessed by a body by virtue of its position and motion.
That means, ME = PE + KE
There are two formss of mechanical energies.
Potential energy: Energy of the body by virtue of its position. PE of a body of mass m at a height h from the surface of earth is, mgh. (g is acceleration due to gravity)
Kinetic energy: Energy of the body by virtue of its motion. KE of a body of mass m moving with speed v will be, (1/2)mv2.
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