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प्रश्न
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
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उत्तर
The mechanical energy changes to potential energy during winding. The potential energy is then released in the form of kinetic energy.
संबंधित प्रश्न
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
State two disadvantages of producing electricity from solar energy.
Name the energy changes for the following:
pendulum
What kind of energy is possessed in a situation when?
A horse running along a level road
What kind of energy is possessed in a situation when?
A stone, in a stretched catapult.
State the energy changes which take place when:
Burning of coal.
Give one example when:
Electric energy changes to mechanical energy.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
