Just say what would happen and label, have details

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

if you answer my question i will answer yours

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement