Rate-and-state laws predict that there is no static friction coefficient and that shear movement occurs under all shear forces—so, for example, even the slightest pushing of a heavy book with ...

For many fluids, the relationship is linear, so that where the coefficient of proportionality is called the ... heat exchanger tubes, etc.). Friction is usually important in these flows because there ...

The answer to that question depends on the height at which the force P is applied to the block and on the coefficients of static friction at the feet. We need to work out the problem two times in ...