InterviewSolution
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InterviewSolution
| 1. |
Differentiate angle of repose and angle of friction and give relation between them |
| Answer» Angle of Friction beween any two surface in contact is defined as the angle which the resultantof the force of limiting friction Flim\xa0and normal reaction N makes with the direction of normal reaction Nas shown in figure. It is marked in the figure as\xa0θ.The value of angle of friction depends on the material and nature of surfaces in contact.\xa0It can be seen from figure, tanθ = AC/OA = Flim\xa0/ N =\xa0μ , where\xa0μ is coefficient of limiting friction--------------------------The angle of repose or angle of sliding α is defined as the minimum angle of inclination of a planewith the horizontal such that a body placed on the plane just begins to slide down.Its value depends on the material and nature of the surface in contact.\xa0from the figure it can be seen that, f =mg sinα ...............(1)N = mg cosα ....................(2)hence we get, f / N = tan\xa0α =\xa0μ | |