In which one of the following circumstances does the principle of conservation of mechanical energy apply, even though a nonconservative force acts on the moving object?

The nonconservative force has a component that points opposite to the displacement of the object.

The nonconservative force points in the same direction as the displacement of the object.

The nonconservative force has a component that points in the same direction as the displacement of the object.

The nonconservative force is perpendicular to the displacement of the object.

The nonconservative force has a direction that is opposite to the displacement of the object.

1 answer

The nonconservative force is perpendicular the the displacement of the object.
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