Find Force to Submerge Ball: 900 kg/m^3, 0.03 m^3

[lbella026]

Homework Statement

A ball has a density of 900kg/m^3 and it's volume is 0.03m^3. To submerge in water the ball must be held down by the force. What is the force required to keep the ball submerged.

Homework Equations

Fnet=ma

The Attempt at a Solution

Not sure what equation to use to find the force/ how to do the problem

 

[Galileo]

Consider the following:
- What are the forces acting on the ball when it is underwater? (Draw a force diagram as aid)
- What should the net force be to keep it at rest underwater?