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The graphs below show the angle domain equations for a constant rod length (6.0") and various values of half stroke (1.8", 2.0", 2.2"). Note in the graphs that L is rod length l {\displaystyle l} and R is half stroke. r {\displaystyle r} .
Calculation of torque [ edit ] For the simple geometry associated with the figure, there are three equivalent equations for the magnitude of the torque associated with a force F → {\displaystyle {\vec {F}}} directed at displacement r → {\displaystyle {\vec {r}}} from the axis whenever the force is perpendicular to the axis:
The cases of T 1 = 0, T 2 = 0, and T 3 = 0 are interesting because the linkages fold. If we distinguish folding quadrilateral linkage, then there are 27 different cases. [3] The figure shows examples of the various cases for a planar quadrilateral linkage. [4] Types of four-bar linkages, s: shortest link, l: longest link.
Torque has the dimension of force times distance, symbolically T −2 L 2 M and those fundamental dimensions are the same as that for energy or work. Official SI literature indicates newton-metre , is properly denoted N⋅m, as the unit for torque; although this is dimensionally equivalent to the joule , which is not used for torque.
The defining feature of a resultant force, or resultant force-torque, is that it has the same effect on the rigid body as the original system of forces. [1] Calculating and visualizing the resultant force on a body is done through computational analysis, or (in the case of sufficiently simple systems) a free body diagram.
Torsion of a square section bar Example of torsion mechanics. In the field of solid mechanics, torsion is the twisting of an object due to an applied torque [1] [2].Torsion could be defined as strain [3] [4] or angular deformation [5], and is measured by the angle a chosen section is rotated from its equilibrium position [6].
In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.
Classical mechanics is the branch of physics used to describe the motion of macroscopic objects. [1] It is the most familiar of the theories of physics. The concepts it covers, such as mass, acceleration, and force, are commonly used and known. [2]