Why is laundry soap easier to cut with a strong thread than with a knife?
| September 23, 2021 | education
Laundry soap is easier to cut with a strong thread, not with a knife – the reason lies in the force of friction.
The friction force of the soap is quite large. The friction force depends on the area of the contacting surfaces.
A knife has a larger area than a thread, and soap sticks to a knife more strongly than to a thread.
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