To calculate the total net forces acting on the crate, we need to consider the forces in both the north-south and east-west directions.
North-South Forces:
- Northward Force: 960 N (from worker)
- Southward Force: 105 N (friction)
The net north-south force can be calculated as: \[ F_{\text{north-south}} = F_{\text{north}} - F_{\text{south}} = 960 , \text{N} - 105 , \text{N} = 855 , \text{N} \text{ (to the north)} \]
East-West Forces:
- Eastward Force: 875 N (from worker)
- Westward Force: 80 N (friction)
The net east-west force can be calculated as: \[ F_{\text{east-west}} = F_{\text{east}} - F_{\text{west}} = 875 , \text{N} - 80 , \text{N} = 795 , \text{N} \text{ (to the east)} \]
Results:
- Total north-south net force: 855 N to the north
- Total east-west net force: 795 N to the east
Thus, the answer is: 855 N to the north and 795 N to the east.