Question

which are true for an object in static equilibrium? select all that apply. the net force is zero. the moment of inertia is zero. the potential energy is zero. the net torque is zero. the center of mass is at the center of the object.

Answer 1

For an object to be in static equilibrium, it must have a net force and net torque of zero. Neither the moment of inertia being zero, the potential energy being zero, nor the center of mass being at the center are conditions for static equilibrium.

Step-by-step explanation:

For an object in static equilibrium, certain conditions must be met. Specifically, the object must conform to the following two principles: the net force is zero and the net torque is zero. The moment of inertia of an object being zero does not pertain to static equilibrium, as a moment of inertia is a property related to an object's mass distribution and its resistance to rotational acceleration rather than its state of equilibrium. Potential energy being zero is not necessarily a condition for static equilibrium, as an object can have potential energy and still be in equilibrium; for example, a book resting on a table has gravitational potential energy. Lastly, the center of mass being at the center of an object is not a requirement for static equilibrium; equilibrium can be achieved regardless of where the center of mass is located, as long as the net forces and torques acting on the object are balanced.