A weight is put in the opposite scale pan and a measured charge of electricity is given to the disk C just sufficient to tip over the balance.
If you have furniture that could tip over either by pulling on it or stepping on a drawer or shelf, you will need to buy wall anchor kits to eliminate this risk.
Further, heavier vehicles tend to fare better in crash tests than lighter vehicles, which tend to tip over more easily.
Safety is paramount for children in the bathroom, so make sure none of your decorations can tip over onto small heads or otherwise be an impediment to your child.
Be careful when transporting or carrying the cake so that it doesn't tip over.