Baby Names associated with Violet for Girls. Usage of these girl names was at its apex during the years 1910-1919 (usage of 0.1704%) and is somewhat lower today (usage 0.0573%, â¼ 66.4%), with names such as Yolanda, Ione and Iola becoming less stylish.
A rotation (or turn) is a transformation that turns a line or a shape around a fixed point. This point is called the center of rotation. We usually measure the number of degrees of rotation of a shape in a counterclockwise direction.
Torque is the twisting force that tends to cause rotation. The point where the object rotates is known as the axis of rotation. Mathematically torque can be written as T = F * r * sin(theta), and it has units of Newton-meters. When the sum of all torques acting on an object equals zero, it is in rotational equilibrium.