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[3] One may compare linear motion to general motion. In general motion, a particle's position and velocity are described by vectors, which have a magnitude and direction. In linear motion, the directions of all the vectors describing the system are equal and constant which means the objects move along the same axis and do not change direction.
Mnemonics to remember angle names. The six degrees of freedom of a mobile unit are divided in two motional classes as described below. Translational envelopes: Moving forward and backward on the X-axis. (Surge) Moving left and right on the Y-axis. (Sway) Moving up and down on the Z-axis. (Heave) Rotational envelopes: Tilting side to side on the ...
Any motion is a one-to-one mapping of space R onto itself such that every three points on a line will be transformed into (three) points on a line. The identical mapping of space R is a motion. The product of two motions is a motion. The inverse mapping of a motion is a motion.
Orthogonal (or perpendicular) – at a right angle (at the point of intersection). Elevation – along a curve from a point on the horizon to the zenith, directly overhead. Depression – along a curve from a point on the horizon to the nadir, directly below. Vertical – spanning the height of a body. Longitudinal – spanning the length of a ...
Rotational motions move a structure in a rotational motion along a longitudinal axis, such as turning the head to look to either side. [3] Apart from this motions can also be divided into: Linear motions (or translatory motions), which move in a line between two points.
The vertical/Z axis, or yaw axis, is an imaginary line running vertically through the ship and through its centre of mass. A yaw motion is a side-to side movement of the bow and stern of the ship. The transverse/Y axis, lateral axis, or pitch axis is an imaginary line running horizontally across the ship and through the centre of mass. A pitch ...
A prismatic joint, or slider, requires that a line, or axis, in the moving body remain co-linear with a line in the fixed body, and a plane parallel to this line in the moving body maintain contact with a similar parallel plane in the fixed body. This imposes five constraints on the relative movement of the links, which therefore has one degree ...
The trajectory determined by the middle of the back axle of a car pulled by a rope at a constant speed and with a constant direction (initially perpendicular to the vehicle). It is a (non-linear) curve which a circle of radius a rolling on a straight line, with its center at the x axis, intersects perpendicularly at all times.