Projectiles, pendula, and special relativity
classification
🌀 gr-qc
keywords
specialrelativitygravitysimpleacceleratedanalysisappearsballistic
read the original abstract
The kind of flat-earth gravity used in introductory physics appears in an accelerated reference system in special relativity. From this viewpoint, we work out the special relativistic description of a ballistic projectile and a simple pendulum, two examples of simple motion driven by earth-surface gravity. The analysis uses only the basic mathematical tools of special relativity typical of a first-year university course.
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