- #1

Jamessamuel

- 45

- 0

## Homework Statement

There's a sphere with the mass of the Earth and same radius.It rotates at constant speed. It hhas the period of the earth. a mass of a kg sits on the surface.

1) find grav force on mass

2) find centripetal force on mass

3) find the difference in magnitude between them

4) suggest a value of acceleration of free fall for the mass.

## Homework Equations

## The Attempt at a Solution

Cant do last part; the way I see it is that the centripetal force does not exist separately; it is criteria for circular motion at constant speed. So clearly the gravitational force over-provides, but I don't understand how this excess is related to the acceleration.