In a graph of kinetic friction vs. normal force, the slope is found to be 3.33. What information is provided by the slope? Determine the friction force between the block and the surface. How to solve inclined plane p...
Figure 1 —COF vs Normal Force. Static friction between strings is determined by the surface characteristics of the main and cross that are moving against each other as well as the force pushing them together. Strings are pushed together by weaving and then pulling to tension. But the main co...
Typical traces of shear force vs. time for the sliding mica surfaces across: d PoPF, e XGH, and f 2XGH/PoPF. The uppermost trace in each graph shows the back-and-forth lateral motion applied to the upper surface, whereas the other traces show the forces transmitted to the lower surface...
The red line in the graph from Fig. 1.21 is the trend line. For friction with a normal force of 120 N, the linear fitting gives a good approximation. For FN = 120 N the trend line is described by the equation μ = −0,0,023,468 × vs + 0,87,555 with R-squared = 0.965. ...
where FS is the Stribeck friction force, v is the sliding speed, μ is the coefficient of friction and N is the normal load in the contact. FS0 is the maximum static friction force, vs is a sliding speed coefficient, kv is a viscous coefficient and i is an exponent. The Stribeck fric...
Typical traces of shear force vs. time for the sliding mica surfaces across: d PoPF, e XGH, and f 2XGH/PoPF. The uppermost trace in each graph shows the back-and- forth lateral motion applied to the upper surface, whereas the other traces show the forces transmitted to the lower ...
Figure 4. Friction coefficient versus normal force graph. Similar to Figure 3, the relationship between the normal force and the friction coefficient in Figure 4 also shows a general trend of constant force, then a sharp decline, and finally a leveling off. However, near the inflection point...
Figure 3. Friction force under different conditions with an electric field throughout the ionic liquid in the EC cell. (a–c) Friction force FR vs. normal force FN for the glass bead and the steel surface in the ionic liquid at different scan velocities v and electrical potentials differences...
For a given load on the strings, the sliding COF goes up with the relative speed of the strings on each other ("sled speed" in the graph). For a given string speed, the sliding COF goes up with additional force pushing the strings together. The normal force for the red and blue ...
that the weight and the material, but not the base area, influence the frictional force, the decrease in force when the block begins to move, due to the lower dynamic friction compared to the static friction (a ‘shark tooth’, see Fig. 2a), and ripples in the graph (Fig. 2b), due...