The instant centre of rotation is a point in a rigid body that has zero velocity at a given instant in time. It is the point around which the body appears to rotate instantaneously.
The instant centre of rotation can be determined by analyzing the velocities of two points on a rigid body. The point where the velocities of these two points are equal and opposite is the instant centre of rotation.
The instant centre of rotation is an important concept in understanding the motion of a rigid body. It helps in analyzing the direction and speed of rotation of the body, and can also be used to calculate forces and torques acting on the body.
Yes, the instant centre of rotation can change depending on the motion of the rigid body. It may also change with time as the body moves and its velocity changes.
The instant centre of rotation and centre of mass are two different concepts. While the instant centre of rotation is a point where there is zero velocity at a given instant, the centre of mass is a point where the entire mass of a body can be considered to be concentrated. However, in some cases, the instant centre of rotation may coincide with the centre of mass of a body.
