A mover is pushing a moving box along a floor at a constant speed. Without changing the direction of the push, is it possible for the mover to increase the force pushing the box in such a way that the friction force increases? To decrease the pushing force so that the friction force increases?
2007-08-17 05:48:53 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
1st answer discusses what happens if the push changes direction, but the question asks for no change. Here's a possibility. Suppose the mover is pushing in a forward and downward direction. Then increasing the force magnitude (but not direction) increases the downward normal force and thus the friction force. Similarly if he is pushing in a forward and upward direction, decreased force magnitude increases the friction.
2007-08-17 06:13:32 · answer #1 · answered by kirchwey 7 · 1⤊ 0⤋
Yes, by the angle of force (push). The higher the angle the more force that will be sent downward to multiply the friction.
2007-08-17 06:08:07 · answer #2 · answered by Martin K 2 · 0⤊ 0⤋
think of that carnival game where the bar pushes all the prizes to you and then falls down and you win. i believe if that bar was lightly laying on the level floor it would have less resistance and more so les friction under it and more velocity/speed to move the box. and if was tightly on the surface it would produce more friction and have more resistance and less speed/velocity to move the box. so the pressure between the bar and the surface is the key here.
2007-08-17 06:38:15 · answer #3 · answered by ? 4 · 0⤊ 0⤋