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प्रश्न
What do you understand by the potential energy of the body?
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उत्तर
The potential energy of a body is the energy possessed by the body by virtue of its state or position.
संबंधित प्रश्न
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
How is the solar energy used to generate electricity in a solar power plant?
What is wind energy?
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
Ocean thermal energy is due to
