Problem $7\mathrm{.}35$

A force of $7\mathrm{.}6$ N causes the $50$ mm diameter shaft to slide along the lubricated bearing with a constant speed of $0\mathrm{.}4\frac{m}{s}$ as shown in the $($Figure $1).$ Assume the lubricant is a Newtonian fluid and the velocity profile between the shaft and the bearing is linear. The gap between the bearing and the shaft is $1\mathrm{.}5$ mm $.$

Figure

$1$ of $1$

Determine the viscosity of the lubricant.

Express your answer to three significant figures and include the appropriate units.

$$

$=$

$$

Request Answer

Part B

Determine the constant speed of the shaft when $P=2N.$

Express your answer to three significant figures and include the appropriate units.