If rotational speed of a disc remains constant, what happens to the speed of a point on the disc if its distance from the axis is doubled?
It stays the same
It also doubles
It triples
It quadruples
velocitytangential= rotationalvelocity*radius
it also double
The quantity of space on object occupies
If the rotational speed of a disc remains constant, the speed of a point on the disc is directly proportionate to its distance from the axis. This relationship is known as the tangential speed.
To calculate the tangential speed, you multiply the radius (distance from the axis) by the rotational speed. Mathematically, the formula is:
Tangential speed = Radius × Rotational speed
If the radius is doubled, and the rotational speed remains constant, the tangential speed will also double.
Therefore, the correct answer is: It doubles.