F-N1-1 Three wolves are pulling on the carcass of a dead animal but the net force on the animal is zero. The first wolf pulls with a force of <2,1> N. The second pulls with a force magnitude equal to 3.162 N in a direction 18.435 degrees from the positive y direction towards the negative x direction. What must be the force of the third wolf?

1. <1,4> N
2. <2,3> N
3. <-2,3> N
4. <-4,1> N
5. <-3,-4> N
6. <-1,-4> N
7. <1,-2> N
 

F-N1-2 A box with wheels attached to bottom is on top of a horizontal scale. Attached to one side is a horizontal rope with a spring scale to measure force (assume the scale and ropes are mass-less). On the other side of the box is a rope that has no force being applied to it.

Sketch a FBD of the box

F-N1-3 A 10-kg-box with wheels attached to bottom is on top of a horizontal scale. Attached to one side is a horizontal rope with a spring scale to measure force (assume the scale and ropes are mass-less). On the other side of the box is a rope that now has a horizontal force equal to 150 N pulling on it.

Sketch a FBD of the box, attempting to scale each vector relative to each other.