Question

I'm trying to solve a task using energy conservation laws. An object with a known coefficient of kinetic friction is propelled by the magnetic field horizontally. We can calculate the loss of energy by the kinetic friction using the A=Fd

formula describing work done by the force of kinetic friction since we also know how far it moved and its mass. Yet I struggle with calculating how much energy would be wasted in order to overcome the force of static friction. The body doesn't move throughout the process, so work will be equal to zero? Is there a separate method for this?

Answer 1

No energy is wasted in order to overcome the force of static friction.

Step-by-step explanation:

The work done by the force of static friction can be calculated using the same formula as the work done by the force of kinetic friction, which is W = Fd. However, since the object does not move throughout the process, the displacement d will be equal to zero, resulting in zero work done by static friction. Therefore, no energy is wasted in order to overcome the force of static friction.