# How fast would something have rotate in order to create earth like gravity from centrifugal force?

##### 1 Answer

Feb 3, 2016

#### Answer:

The rotational speed will vary depending on the radius of the object imparting the artificial gravitational field.

#### Explanation:

From the physics laws governing rotational and orbital motion, the centripetal Force =

If we want the same gravitational acceleration as on planet Earth then the rotational speed

Where

r - radius of the rotating object in metres.

To express the angular rotation in revolutions per sec we can use the relationship that 1 radian is equivalent to