You are pushing a 20-kg box along a horizontal floor. Friction acts on the box. When you apply a horizontal force of magnitude 48 N, the box moves at a constant velocity. If you increase your horizontal pushing force to 100 N, what is the acceleration of the box?

Explanation:

The first box has the following equation of equilibrium:

The coefficient of friction is:

There is a net acceleration, when horizontal pushing force is increased:

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.