If the angular momentum of an object increases, which of these could be true?

a) the object’s moment of inertia decreased.
b) the mass of the object decreased.
c) the angular velocity of the object decreased.
d) the moment of inertia increased.

Relationship between angular momentum(L), angular velocity(ω) and moment of inertia(I) is :

L = Iω. 

If L increase, ω also increases hence moment of inertia increases.

Hence option D is correct.
Hope this helps!

So, when I sharpen a blade with some girth behind the cutting edge, they turn out scary sharp. But when I try to sharpen a realy thin blade, they turn out just so so. I still get them pretty sharp, they'll slice paper and shave okay, but they don't clean shave like a thicker blade will when I'm done with it.I suspect this is for 2 reasons. First, the bevel is so tiny that it's harder to keep it consistent. And second, it's almost like the edge is rolling, no matter what I do to try to avoid it. Like the edge is so thin that it just rolls on the strop. I can't really feel any burrs though, so I am at a loss and ready to give up on really thin blades.I use the same process for both types of blades, but they turn out quite different.

Explanation:

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