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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
Is work a scalar or a vector quantity?
Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
Determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied force.
How many joules are there in 1 mega joule?
Is power a scalar or a vector quantity?
A coolie is pushing a box weighing 1500 N up an inclined plane 7.5 m long on to a platform, 2.5 m above the ground.
(i) Calculate the mechanical advantage of the inclined plane. (ii) Calculate the effort applied by the coolie.
(iii) In actual practice, the coolie needs to apply more effort than what is calculated. Give one reason why you think the coolie needs to apply more effort.
