Breaking Down Chalks

Classical Mechanics Level 1

We notice that when we break a chalk into smaller pieces, it becomes harder to break those pieces into further smaller pieces. It means that smaller the chalk, harder (needs more force) to break it.

Which option gives the correct reasoning for the above statement?

The center of mass of the chalk becomes closer and closer, thereby, reducing the torque on it As it becomes small it becomes slippery Due to the irregularity in the edges

Md Zuhair by Md Zuhair , 20, India

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1 solution

Md Zuhair
Aug 13, 2016

As we keep breaking the chalks the COM comes very near to a place from where we give force ... So as we know When we are giving a couple so more force is required as we are decreasing our distance from COM. Hence we get the ans

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