Question

While you push a box you begin to decrease the force you are exerting on the box. When will the box reach static equilibrium?.

Answer 1

When you start to decrease the force applied to the box, it will reach a static equilibrium when the applied force equals force of friction.

What is static equilibrium?

Static equilibrium can be defined as the physical state of the system, in which the components of the system are at rest and the net force acting on a system is zero.

At a zero net force on the box, the box will be in static equilibrium.

Apply Newton's second law of motion as follows;

F(net) = F - Ff

where;

• F(net) is the net force
• F is the applied force
• Ff is the force of friction

at static equilibrium, F(net) = 0

0 = F - Ff

F = Ff

Thus, the box will reach a static equilibrium when the applied force equals force of friction.

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