PHYSICS HOMEWORK #8 NEWTON’S LAWS
6. A 80 Kg box is being pulled across a floor with a coefficient of friction of .20. What is the minimum force required to get the box moving but not accelerating?
7. If in the previous problem, a force of 300 n is applied what is the net force that will accelerate the box?
8. A reluctant 75 kg dog refuses to go out for his morning walk due to the rain. If he must be dragged across the kitchen floor with a coefficient of friction of .10, what is the minimum force required to get the dog across the room?
9. A 1.5 kg textbook is slid at a minimum constant speed across the table with 3 n. What is the coefficient of friction?