Which of the following statements are correct about the situation described in the introduction?
Check all that apply.

a. The loudspeaker is in static equilibrium.
b. The loudspeaker is in dynamic equilibrium.
c. The loudspeaker is not in static equilibrium, because it is not on the ground.
d. The loudspeaker is not in dynamic equilibrium, because it is accelerating.
And this is just a curiosity question. What forces are acting on this object?