Question

multiple choice question
if the net force acting on an object is zero, then
the object is in equilibrium,
the object is inertia - free,
the object forms an isolated system,
the object is not subject to newtons laws,
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Explanation:

• Equilibrium: When the net force acting on an object is zero, according to Newton's first law of motion, the object's velocity (which can be zero or non - zero) remains constant. An object with a constant velocity (including \(v = 0\)) is said to be in equilibrium.
• Inertia - free: Inertia is a property of matter (\(I=mr^{2}\) for rotational inertia and \(m\) for translational inertia in the context of \(F = ma\)). All objects with mass have inertia. The net force being zero does not make an object inertia - free.
• Isolated system: An isolated system is one where there is no exchange of matter and energy with the surroundings. The net force being zero is about the sum of forces acting on an object, not about the object's interaction with the environment in terms of matter and energy.
• Not subject to Newton's laws: Newton's laws are fundamental laws of motion. If the net force is zero, it is still in the realm of Newton's first law (\(F_{net}=0\Rightarrow a = 0\Rightarrow v=\text{constant}\))

Answer:

the object is in equilibrium.