Why does a hovering helicopter rotate with the Earth?
The helicopter was already rotating around the earth when it took off; no force counteractive to this motion acts on the helicopter after it has taken off. As such there is no change in its rotational motion. The air is after all also rotating around the planet at the same speed.
The Short Answer
The helicopter was already rotating around the earth when it took off; no force counteractive to this motion acts on the helicopter after it has taken off. As such there is no change in its rotational motion. The air is after all also rotating around the planet at the same speed. This actually raises an important point, which is that we (and everything else on the planet's surface) are not solely in circular motion because of friction, like a coin on a turntable. Instead, we are moving at a constant speed that is constantly being accelerated towards the centre of the earth by gravity, which is more resemblant to a ball spinning on the end of a string. Basically, the thing holding the helicopter in the spin is gravity and that's there regardless of whether its on the ground or up in space.
Analysis
Key Concepts: Helicopter, motion, rotating
This explanation focuses on helicopter, motion, rotating and spans 143 words across 6 sentences. At 110% above the average Space & Astronomy explanation (68 words), this is one of the more thorough answers in this category, reflecting the complexity of the underlying question.
What This Answer Covers
The explanation opens with: “The helicopter was already rotating around the earth when it took off; no force counteractive to this motion acts on the” It then elaborates by explaining the root cause, ultimately building toward a complete picture across 6 connected points.
How This Compares in Space & Astronomy
Ranked #34 of 500 Space & Astronomy questions by answer depth (top 8%). This places it in the comprehensive tier — the top quarter of most thoroughly answered questions. Questions at this depth typically involve multi-faceted topics requiring nuanced explanation.
Frequently Asked Questions
Is there a simple explanation for why a hovering helicopter rotate with the earth?
The helicopter was already rotating around the earth when it took off; no force counteractive to this motion acts on the helicopter after it has taken off. As such there is no change in its rotational motion. The air is after all also rotating…
How detailed is this explanation compared to similar Space & Astronomy questions?
This is one of the most thorough answer at 143 words, ranked #34 of 500 Space & Astronomy questions by depth. The key concepts covered are helicopter, motion, rotating.
What approach does this answer take to explain a hovering helicopter rotate with the earth?
The explanation uses root cause analysis across 143 words. It is categorized under Space & Astronomy and addresses the question through 1 analytical lens.