Advertisements
Advertisements
प्रश्न
What are the various energy transformations that occur when you are riding a bicycle?
उत्तर
- While riding a bicycle, the muscular energy of the rider gets transferred into heat energy and kinetic energy of the bicycle. Heat energy heats the rider’s body. Kinetic energy provides a velocity to the bicycle. The transformation can be shown as:
- During the transformation, the total energy remains conserved.
- Muscular Energy → Kinetic Energy + Heat Energy
APPEARS IN
संबंधित प्रश्न
State the energy changes in the following while using an electric motor.
State the energy changes that occur in the following :
An electric generator (or dynamo).
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the Charging of a battery.
State the energy changes in the following case while in use:
a steam engine
State the energy changes in the following case while in use:
Burning coal
A rocket is moving up with a velocity v. If the velocity of this rocket is suddenly tripled, what will be the ratio of two kinetic energies?
A boy is moving on a straight road against a frictional force of 5 N. After travelling a distance of 1.5 km he forgot the correct path at a roundabout (Fig. 11.1) of radius 100 m. However, he moves on the circular path for one and half-cycle and then he moves forward up to 2.0 km. Calculate the work done by him.
The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.
A light and a heavy object have the same momentum. Find out the ratio of their kinetic energies. Which one has larger kinetic energy?
The energy conversion in a washing machine is from ______.