## Related questions with answers

Question

If a force of P=2N causes the $30$ -mm-diameter shaft to slide along the lubricated bearing with a constant speed of $0.5 \mathrm{~m} / \mathrm{s}$, determine the viscosity of the lubricant and the constant speed of the shaft when $P=8 \mathrm{~N}$. Assume the lubricant is a Newtonian fluid and the velocity profile between the shaft and the bearing is line ar. The gap between the bearing and the shaft is $1 \mathrm{~mm}$.

Solution

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1 of 5Given :$P=2\ N$ (force)

$D=30\ mm$

$u=0.5\ m/s$

Assume Newtonian fluid and linear velocity profile and a gap $=1\ mm$

Required :Viscosity $\mu$ of the fluid

The constant speed $u$ when $P=8\ N$

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