- #1
Queren Suriano
- 50
- 0
Homework Statement
A piston 10 is coaxially in diameter moves within a cylinder whose inner diameter is 10.006 in;
The annular space between piston and cylinder is filled with oil having a kinematic viscosity is 0.004 feet ^ 2 / s and specific gravity of 0.85
If the piston makes its way with a speed of 30 ft / min and the length of the piston within the cylinder is 10 feet, calculate the shear force and the friction opposing the motion of the piston
Homework Equations
(tangencial force) / area = (dynamic viscosity) (velocity/space betwteen the two surfaces)
The Attempt at a Solution
I can know the dynamic viscosity of the equation kinematic viscosity = dynamic viscosity/density and the density it can be known from the specific gravit.
So if I draw a Diagram of piston, I have two tangent forces and the weight. But I know that (tangencial force) / area = (dynamic viscosity) (velocity/space betwteen the two surfaces) and the area of contact it can be calculated from 2(pi)(radio) (Lenght)?
Last edited by a moderator: