On the Upanishads Here are two verses from the Chhandogya Upanishad, a text composed in Sanskrit c. sixth century BCE:
The Nature of the Self
This self of mine within the heart, is smaller than paddy or barley or mustard or millet or the kernel of a seed of millet. This self of mine within the heart is greater than the earth, greater than the intermediate space, greater than heaven, greater than these worlds.
The True Sacrifice
This one (the wind) that blows, this is surely a sacrifice. . . . While moving, it sanctifies all this; therefore it is indeed a sacrifice.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?