In the algebraic equation for a circle.
(x - g)^2 + (y - h)^2 = r^2
'g' & 'h' are the centre of rotation.
When performing a rotation, you do not need to know the exact coordinates of the center of rotation. All you need is the angle of rotation and the shape or object being rotated.
To rotate a box around its center in MATLAB, you can use a rotation matrix. First, define the box's vertices in 3D space, then calculate the center by averaging the coordinates. Apply the rotation matrix, which is defined as ( R = \begin{bmatrix} \cos(\theta) & -\sin(\theta) \ \sin(\theta) & \cos(\theta) \end{bmatrix} ) for 2D or its 3D equivalent for 3D rotation, to the vertices after translating them to the origin (subtracting the center). Finally, translate the vertices back to their original position by adding the center coordinates.
The first step to finding a triangle's center of gravity is to calculate the average of the x-coordinates and y-coordinates of the triangle's vertices. This will give you the coordinates of the centroid, which is the point where the center of gravity lies.
The rotation matrix can be expressed in terms of spherical coordinates by using the azimuthal angle (), the polar angle (), and the radial distance (r) to determine the orientation of the rotation.
To calculate the GD² value for an agitator, you need to determine the mass (G) of the agitator and the square of the distance (D) from the center of rotation to the mass's center of gravity. The formula is GD² = G × D². First, measure or estimate the mass of the agitator components, then calculate the distance from the center of rotation to the center of gravity for each component, square that distance, and multiply by the mass. Sum the GD² values of all components to get the total GD² for the agitator.
To rotate an object 90 degrees clockwise, visualize the rotation around a central point or axis. If you're working with coordinates, you can transform the coordinates (x, y) to (y, -x). For a physical object, simply pivot it to the right until it reaches the desired angle. Ensure the center of rotation remains fixed if applicable.
The answer will depend on whether the rotation is clockwise or anti-clockwise.
A rotation turns a shape through an angle at a fixed point thus changing its coordinates
I think you mean the centrifugal force. That force points outwards from the center of rotation.
You need two coordinates, not one, to specify a point. To calculate the slope, simply calculate (difference in y-coordinates) / (difference in x-coordinates).
A 180-degree rotation is a transformation that turns a shape or point around a center point (often referred to as the origin) by half a full turn, resulting in the shape or point being flipped to the opposite side. For a point (x, y), the new coordinates after a 180-degree rotation will be (-x, -y). This type of rotation effectively mirrors the object across the center point. It is commonly used in various fields, including geometry, computer graphics, and robotics.
Yes. A tornado has a center of rotation.