Coefficient of friction in soap?

In summary, the conversation discusses the difficulty in finding static and dynamic friction values for dry and wet soap. It is suggested to find these values experimentally and keep in mind that different types of soap may have different characteristics. The conversation also briefly mentions the coefficients of friction for pairs of surfaces and the presence of oils affecting these values. The suggestion is made to consult a "Tribology" handbook for further information.
  • #1
Facial
30
1
What are the static and dynamic friction values for dry and wet soap? I can't find these things anywhere on the net, except for an assumption of the kinetic value of 0.06.

If someone has access to an extensive data sheet on frictional values, then that would help greatly. Thanx
 
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  • #2
I would find it experimentally if you want good data.
 
  • #3
Coefficients of friction are ordinarily listed for pairs of surfaces. For example, (from an oollldddd CRC Hndbk), "wood on wood (dry) x.xx, wood on wood (soapy) y.yy." Soap on 20 grit sandpaper, or soap on wet glass?
 
  • #4
Keep in mind as well that there are myriad formulae of soap. Ivory bar soap will not have the same characteristics as Dial, and certainly not the same as Tide laundry detergent.
 
  • #5
Just out of curiosity,
If we don't count in superfluids ,can somebody list friction coefficinents of pairs of hard and soft materials that are "the most slippery" in practice?
Some sort of engine oils I guess?
 
  • #6
Oils have viscosity, not coefficients of friction.
 
  • #7
cyrusabdollahi said:
Oils have viscosity, not coefficients of friction.
Directly,they haven't got it all right.
But it can be defined under certain conditions where oil is present.
Consider two metal pistons submerged in oil ,and they press against each other.
 
  • #8
Find a "Tribology" handbook and have a party.
 
  • #9
Find "tribdog" and have a party

...make sure not to bring any pepsi. :smile:
 

Related to Coefficient of friction in soap?

1. What is the coefficient of friction in soap?

The coefficient of friction in soap refers to the measure of the amount of resistance between two surfaces when soap is present. It is a dimensionless value that ranges from 0 to 1, where 0 represents no friction and 1 represents high friction.

2. How is the coefficient of friction in soap measured?

The coefficient of friction in soap is typically measured using a tribometer, which is a device that measures the frictional forces between two surfaces. Soap is applied to one of the surfaces and then the tribometer measures the force required to move the two surfaces against each other.

3. What factors can affect the coefficient of friction in soap?

The coefficient of friction in soap can be affected by a variety of factors, including the type and amount of soap used, the surface material and texture, the temperature, and the speed at which the surfaces are moving against each other.

4. How does the coefficient of friction in soap impact cleaning performance?

The coefficient of friction in soap plays a crucial role in cleaning performance. A higher coefficient of friction means that the soap is more effective at removing dirt and grime from surfaces, as it increases the friction between the soap and the surface, allowing for better cleaning.

5. Can the coefficient of friction in soap be manipulated?

Yes, the coefficient of friction in soap can be manipulated by adjusting the formula and ingredients used to make the soap. Adding certain substances, such as glycerin or oils, can increase the coefficient of friction, while adding others, like silicone, can decrease it.

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