Forces used when brushing your teeth are pushing, pulling and rotating
it can pull out some of your hair
No it harms it. Too much brushing can be bad but brushing your hair normally will not harm it. It removes dirt from your hair and it detangles it. It is good for you.
No.
keep brushing ur hair with a light brush just wash it and keep brushing your hair
Brushing your hair will stimulate your scalp and help your hair grow . Also it helps your natural oils to polish and make your hair shine.
your follicles fall out. Mainly its from shampooing and brushing your hair, known to lose on average 120 strands for men and 40 for women when both are combined. It depends on how strong the hair. Some people lose their hair sample as easy as brushing your bangs, to some, getting hair samples requires you to use more than enough force that you actually have to pull it hardly out of their head to get a root
It is a push and a pull. When you move your body towards the ground, it is a pull. A pull as in a pull to the ground. It is a push when you are moving away from the ground.
A push or a pull is a force
No.
what is a pull-push rule
We all loose hair daily, and 20 is a resonable number, I wouldn't worry about it. Brushing tends to pull out hair so if you have long hair you should use a paddle brush. Is has a big square head and is better for long hair as it goes easier through it. If your hair is short you can use any brush really. If it is knotty start brushing at the ends and work your way up to the scalp.