Talk:Friction Manipulation/@comment-25319376-20140929082358/@comment-33472539-20180316131153

You can do something similar. The friction force is equal to the friction coefficient multiplied by the normal force, or the equal and opposite force that is applied to the object in question. usually, this is equal and opposite to gravity but could include something holding it against the frictive surface. Assuming "manipulating friction" means the modification of the force due to friction, there are two ways to do it. Modify the coefficient of friction, or modify the normal force. You can modify the normal force by applying another force, or modify a force that is already there i.e gravity, thus modifying the frictive force.