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प्रश्न
Name the physical quantity associated with the 'rate of doing work'.
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उत्तर
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संबंधित प्रश्न
Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________
Its moment of a force scalar or a vector quantity?
Write an expression for work done by a force depends?
Write an expression for the work done against gravity.
How is horse power related to the S. I. unit of power?
Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?
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.
A force can cause an object to change its ______.
