Question 1206077
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Tutor @mananth has an incorrect diagram. Or at the very least, it's misleading.
The pendulum should sweep out part of a circle, but the fixed point of the pendulum (the point where it's hanging from) should be the center of the circle. It should not be a point on the circle itself.


This is what the diagram should look like
{{{
drawing(400,400,-5,5,-5,5,

circle(0,0,3),

circle(0,0,0.05),circle(0,0,0.07),circle(0,0,0.09),circle(0,0,0.11),circle(0,0,0.13),circle(0,0,0.15),circle(0,-3,0.05),circle(0,-3,0.07),circle(0,-3,0.09),circle(0,-3,0.11),circle(0,-3,0.13),circle(0,-3,0.15),circle(2.4216961764,-1.7707025806,0.05),circle(2.4216961764,-1.7707025806,0.07),circle(2.4216961764,-1.7707025806,0.09),circle(2.4216961764,-1.7707025806,0.11),circle(2.4216961764,-1.7707025806,0.13),circle(2.4216961764,-1.7707025806,0.15),circle(0,-1.7707025806,0.05),circle(0,-1.7707025806,0.07),circle(0,-1.7707025806,0.09),circle(0,-1.7707025806,0.11),circle(0,-1.7707025806,0.13),circle(0,-1.7707025806,0.15),

line(0,0,0,-3),
line(0,0,2.4217, -1.7707),
line(0,-1.7707,2.4217, -1.7707),
locate(0.1,-0.4,22^o),
locate(1.12,-0.3,1.2),

locate(-1.5,-0.76,"1.2-h"),
locate(-0.5,-2.28,"h"),

locate(-4.5,-4.5,matrix(1,4,"Diagram","not","to","scale"))
)
}}}
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