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Answers to Readers' Questions on Physical Science:

Changing Fluid Friction

The following 2 comments and questions have been sent in. They are listed according to date.

List of first 10 items

• Does a liquid have static friction?
• Why does friction increase?

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Does a liquid have static friction?

Question

November 27, 2009

hello..!
actually I've question that

Why does the object move in liquid??
doesn't it have static friction?

Ahmed - Pakistan

18746

Answer

Liquids have both static and kinetic friction, which is caused by molecular attraction. However, the coefficient of friction is extremely--close to zero--so objects moves easily in liquids or fluids. It is similar to how things move easily on slippery ice.

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Why does friction increase?

Question

October 13, 2009

why friction increases?

ciara jennica - Philippines

18492

Answer

Friction can increase due to changing materials, temperature and speed, depending on the characteristics of the materials.

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