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प्रश्न
Name the forms of energy which a wound-up watch spring possesses.
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उत्तर
Elastic potential energy is possessed by wound up watch spring
संबंधित प्रश्न
Define 1 J of work.
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
A water pump raises 50 litres of water through a height of 25 m in 5 s. Calculate the power of the pump required.
(Take g = 10 N kg-1 and density of water = 1000 kg m-3)
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
Why is the work done on an object moving with uniform circular motion zero?
The work done on an object does not depend on ______.
Explain the difference between a uniform linear motion and a uniform circular motion.
A man carrying a suitcase in his hand is walking horizontally. What is the work done against gravity?
If a ball is dropped on the sloping roof of a house, it acquires ______ and falls on the ground. That is the transformation of ______ energy into ______ energy takes place.
(kinetic, potential, motion)
