Khurram Wadee ✅<p>Imagine a circular wheel rolling, without skidding, on a flat, horizontal surface. The <a href="https://mastodon.org.uk/tags/locus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>locus</span></a> of any given point on its <a href="https://mastodon.org.uk/tags/circumference" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>circumference</span></a> is called a <a href="https://mastodon.org.uk/tags/cycloid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cycloid</span></a>. It is a <a href="https://mastodon.org.uk/tags/periodic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>periodic</span></a> <a href="https://mastodon.org.uk/tags/curve" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>curve</span></a> with <a href="https://mastodon.org.uk/tags/period" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>period</span></a> over the <a href="https://mastodon.org.uk/tags/circle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>circle</span></a>'s circumference and has <a href="https://mastodon.org.uk/tags/cusps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cusps</span></a> whenever the point is in contact with the surface (the two sides of the curve are tangentially vertical at that point).</p><p><a href="https://mastodon.org.uk/tags/Mathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mathematics</span></a> <a href="https://mastodon.org.uk/tags/Geometry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Geometry</span></a> <a href="https://mastodon.org.uk/tags/Maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Maths</span></a> <a href="https://mastodon.org.uk/tags/AppliedMathematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AppliedMathematics</span></a> <a href="https://mastodon.org.uk/tags/Mechanics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mechanics</span></a> <a href="https://mastodon.org.uk/tags/Kinematics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Kinematics</span></a> <a href="https://mastodon.org.uk/tags/Dynamics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Dynamics</span></a> <a href="https://mastodon.org.uk/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Physics</span></a> <a href="https://mastodon.org.uk/tags/MyWork" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MyWork</span></a> <a href="https://mastodon.org.uk/tags/CCBYSA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CCBYSA</span></a> <a href="https://mastodon.org.uk/tags/WxMaxima" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WxMaxima</span></a></p>