Axis of Rotation
Definition of Axis of Rotation
Axis of Rotation is a line about which a three-dimensional object is rotated in space.
More about Axis of Rotation
Axis of rotation of an object can be within the body or outside the body.
Examples of Axis of Rotation
The blue line in the above figure is the axis of rotation of the sphere.
Video Examples: Rotation of Axes: Part A
Solved Example on Axis of Rotation
Ques: Which of the following solid is formed when the given triangle is rotated about X-axis?
Choices:A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4
Correct Answer: A
Step 1: When a triangle is rotated about X-axis, it forms a cone with its axis of symmetry as the same X-axis.
Step 2: So, Figure 1 is formed when the given triangle is rotated along X-axis.