Concept explainers
When you compress a sponge, which quantity changes: mass, inertia, volume, or weight?
The quantity which changes when a sponge is compressed- mass, inertia, volume, or weight.
Answer to Problem 39A
Only volume changes.
Explanation of Solution
Introduction:
The mass is the quantity of matter in an object while the volume is space taken up by the object.
And, the more the mass of an object, the more will be its inertia. Now, if the given mass of an object is
Where,
As can be seen from above, only the volume depends on the space covered by the sponge, and all other three quantities, mass, inertia and its weight, depends upon the quantity of matter contained in it.
Conclusion:
Hence, on compression of sponge, only its volume changes.
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