query: Why does Friction$ = μN$?
positive_passages.docid: 73310
positive_passages.text: Why is the equation for friction so simple?
negative_passages.docid: 147778
negative_passages.text: How can static friction do work?
negative_passages.docid: 61345
negative_passages.text: Newton's second law explanation
negative_passages.docid: 78062
negative_passages.text: Please help understanding the difference between force and kinetic energy for an object hitting a wall?
negative_passages.docid: 75259
negative_passages.text: Why is velocity squared in kinetic energy?
negative_passages.docid: 101527
negative_passages.text: Why is it that a force is not required for a body to move at constant velocity?
negative_passages.docid: 62362
negative_passages.text: Friction during pure rotation
negative_passages.docid: 97768
negative_passages.text: Why is $R\cos{a} = mg$ in circular motion compared and not $R = mg\cos{a}$?
negative_passages.docid: 83453
negative_passages.text: Why isn't energy conserved in this collision problem?
negative_passages.docid: 59276
negative_passages.text: Why is there a $1/2$ factor in the surface tension for a thin film?
negative_passages.docid: 71186
negative_passages.text: Why is the drag force proportional to $v^2$ and defined with a factor of $1/2$?
negative_passages.docid: 109172
negative_passages.text: The direction of frictional force in smooth rolling motion
negative_passages.docid: 8583
negative_passages.text: Dependence of Friction on Area
negative_passages.docid: 113516
negative_passages.text: Why can we only add or subtract things of the same dimension (meters/second, newtons, etc)?
negative_passages.docid: 121320
negative_passages.text: Why is there conservation of kinetic energy in elastic collision and not in inelastic collision?
negative_passages.docid: 62022
negative_passages.text: Why is velocity of the mass $v/ \cos θ $? Why not $2v \cos θ$?
negative_passages.docid: 152278
negative_passages.text: Why does friction produce heat?