Advertisements
Advertisements
प्रश्न
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
Advertisements
उत्तर
The stone continues to rise in height as it is hurled. Kinetic energy falls while potential energy rises. The body has 0 KE and solely P.E. at its peak. Now, as the stone moves closer to the ground, its height decreases and P.E. also decreases. However, as speed increases, KE. increases, and at zero height on the ground, P.E. is zero and K.E. converts to heat, sound, etc.
APPEARS IN
संबंधित प्रश्न
State one important advantage and disadvantage each of using nuclear energy for producing electricity.
Which of the following produces more heat (per unit mass) on burning?
Name the type of energy (kinetic or potential) possessed by the following:
A moving bus.
How much hydroelectric power is generated in India?
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
Give three examples of bodies possessing potential energy.
What is the main energy transformation that occur in:
Photosynthesis in green leaves.
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]
