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Earth's axis
0 N, since there is no x component of the force.
That depends on where the axis of rotation is.
When a helicopter is hovering (aka "still") it has the force of gravity pushing "down" toward the Earth and the force of "lift" of the spinning rotor blade(s) pushing against the surrounding air. When the gravitational force is equal to the force of lift the helicopter hovers on the vertical axis.
it is the force acting on an element of any cross section multiplied by its distance from an predefined axis
All objects on earth have the force of Gravity acting on them.
The Vertical Y-Axis Shows The Frequency.
Earth's axis
The x axis is horizontal; the y axis is vertical
For simplicity consider a force whose direction does not correspond to either the x- or y-axis. At the head of the force (where the arrow is) draw a vertical line to the horizontal axis and a horizontal line to the vertical axis. The force is now enclosed by the lines you have drawn and the axes and this enclosure is a rectangle. Since a rectangle is also a parallelogram this means that you have also resolved the given vector into two components, namely, the one given by the portion of the horizontal axis between the origin and where your vertical line meets that axis, and the one given by the portion of the vertical axis between the origin and where your horizontal line meets that axis. These two vectors are the rectangular components of the given force.
For simplicity consider a force whose direction does not correspond to either the x- or y-axis. At the head of the force (where the arrow is) draw a vertical line to the horizontal axis and a horizontal line to the vertical axis. The force is now enclosed by the lines you have drawn and the axes and this enclosure is a rectangle. Since a rectangle is also a parallelogram this means that you have also resolved the given vector into two components, namely, the one given by the portion of the horizontal axis between the origin and where your vertical line meets that axis, and the one given by the portion of the vertical axis between the origin and where your horizontal line meets that axis. These two vectors are the rectangular components of the given force.
0 N, since there is no x component of the force.
That depends on where the axis of rotation is.
When a helicopter is hovering (aka "still") it has the force of gravity pushing "down" toward the Earth and the force of "lift" of the spinning rotor blade(s) pushing against the surrounding air. When the gravitational force is equal to the force of lift the helicopter hovers on the vertical axis.
It is the vertical axis along which the abscissa are measured.Often it is the y-axis, but not always. On a distance time chart, for example, you will probably have t and d-axes rather than x and y. On a probability chart, the vertical axis is the probability, not y. In 3-D space, it is the z-axis that is vertical, not y.
The x axis is the horizontal axis. The y axis is the vertical axis.
The vertical axis is the y-axis. The horizontal axis is the x-axis.