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pbody
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1. In tearing a paper towel or plastic bag from a roll, why is a sharp jerk more effective than a slow pull
2. I found this answer online
A quick, sharp jerk means a greater acceleration and a greater acceleration means a greater force. And it is force that tears the paper towel or plastic bag
I was thinking not only the force of the jerk like the answer online said but wouldn't it be as well because the roll is ƩF = 0 and the quick acceleration of the one piece while the rest remain unmoved?
I don't know if that is confusing sorry if it is.
2. I found this answer online
A quick, sharp jerk means a greater acceleration and a greater acceleration means a greater force. And it is force that tears the paper towel or plastic bag
The Attempt at a Solution
I was thinking not only the force of the jerk like the answer online said but wouldn't it be as well because the roll is ƩF = 0 and the quick acceleration of the one piece while the rest remain unmoved?
I don't know if that is confusing sorry if it is.