H2P-64
Contact forces
H2 Physics · JC 1 · Easy · Contact forces
A 12 kg box is at rest on a horizontal floor. The maximum static friction between the box and the floor is 45 N. A rope pulls the box horizontally. What is the minimum horizontal pull needed to start moving the box?
- 45 N
- 12 N
- 33 N
- 57 N
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