The phrase "a pendulum of" is correct and usable in written English.
It can be used to describe a situation or concept that swings back and forth between two extremes or states.
Example: "The debate on climate change often feels like a pendulum of opinions, swinging between urgency and complacency."
Alternatives: "a swing between" or "a fluctuation of".
Qadhi seemed to be riding a pendulum of self-preservation.
What she actually wrote was: "Since Watergate, there has been a pendulum of partisan revenge.
Like a pendulum of heat swinging menacingly above the Eastern United States, the extreme conditions are expected to return by the end of next week — first moving west, then returning back east — bringing a new round of suffocating temperatures, Mr. Mussoline said.
His surrogate becomes the phoenix, forever dying in its bed of flame and then resurrecting itself from the ashes: So that a sumptuous monotony Sets in, a pendulum of amethysts In the shape of a bird, keyed up for ever fiercer Flights between ardor and ashes...
But the relationship between megastar Hulk Hogan and WWE has been a pendulum of love and hate for decades.
Carnap (1987 [1932], 466) presents two examples of observational sentences, \(O_S\): "Here (in a laboratory on the surface of the earth) is a pendulum of such and such a kind," and "the length of the pendulum is 245.3 cm".
In that scenario, the animal swings like a pendulum off of one branch, and then arcs like a cannonball into a pendulum swing on the next branch.
You can make a pendulum out of a paperclip, a ring, or a washer.
It think it's always been a bit of a pendulum for me, going back and forth between the two.
Dynamic response of most seismological instruments and many engineering structures to ground shaking can be represented via response of a pendulum (single-degree-of-freedom oscillator).
Based on wind tunnel tests and validated by simulations, the differences of linear movement compared to a pendulum movement of a sagging cable are shown.
