Advertisements
Advertisements
प्रश्न
State the energy changes that occur in the following :
The unwinding of a watch spring.
Advertisements
उत्तर
Potential energy to kinetic energy.
APPEARS IN
संबंधित प्रश्न
State the energy changes in the following case while in use:
A ceiling fan
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the unwinding of a watch spring.
State the energy changes in the following case while in use:
Microphone
State the energy changes in the following case while in use:
A petrol engine of a running car
Explain conservation of energy.
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.
Is it possible that an object is in a state of accelerated motion due to external force acting on it, but no work is being done by the force? Explain it with an example.
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 ______.
