Applied Force
Increase applied force 0.0 N
0 N 22.5 N 45 N
Weight 50 N
30 N 100 N
μk 0.40
0.10 0.55
Applied force: 0.0 N
Friction force: 0.0 N
Normal force: 50.0 N
Friction type: Static
Box is at rest
Student Answer
Friction Force vs Applied Force
Observe static friction increase and then drop to kinetic friction.
Force Vectors
Applied force, F
Friction force, f
Normal force, N
Weight, W
Increase the applied force slowly. Static friction matches the applied force until maximum static friction is reached. When the box begins sliding, friction decreases to kinetic friction and remains constant.