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प्रश्न
Draw a diagram to show the energy changes in an oscillating simple pendulum. Indicate in your diagram how the total mechanical energy in it remains constant during the oscillation.
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उत्तर
The diagram shows a freely oscillating pendulum.
In position A, it has max. P.E. and zero K.E.
In position B, it has zero P.E. and max. K.E.
In position C, it has a max. P.E. and zero K. E.
Thus, the experiment clearly proves that the sum of the total energy is conserved, but it can change its form.
संबंधित प्रश्न
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
What do you understand by the kinetic energy of a body?
Select the renewable and non-renewable sources of energy from the following:
Water
What is hydro energy?
Explain the principle of producing electricity using the nuclear energy.
Name the form of energy in which potential energy can change.
Give three examples of bodies possessing potential energy.
What is the main energy transformation that occur in:
Photosynthesis in green leaves.
State two advantages and two disadvantages of using hydro-energy for producing electricity.
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
