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<p>in a non-inertial frame than in an inertial one.</p>

<p><big>Gravity as a fictitious force</big></p>
<p>The notion of "fictitious force" also arises in Einstein's <a href="page.php?w=general_theory_of_relativity">general theory of relativity</a>. All fictitious forces are proportional to the mass of the object upon which they act, which is also true for <a href="page.php?w=gravity">gravity</a>. This led <a href="page.php?w=Albert_Einstein">Albert Einstein</a> to wonder whether gravity could be modeled as a fictitious force. He noted that a <a href="page.php?w=freefall">freefall</a>ing</p><p>
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