Curvature k and torsion of a helix C are in a constant ratio to the curvature k, of the plane curve C, obtained by projecting C on a plane perpendicular to the axis of helix i.e. they are connected by the relation and t = k₁ sin a cos a k = k₁ sin² a where a is the constant angle at which the helix cut the generators.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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T
Curvature k and torsion of a helix C are in a constant ratio to the
curvature k, of the plane curve C, obtained by projecting C on a plane perpendicular to
the axis of helix i.e. they are connected by the relation
t = k₁ sin α cos a
k = k₁ sin² α
where a is the constant angle at which the helix cut the generators.
and
Transcribed Image Text:T Curvature k and torsion of a helix C are in a constant ratio to the curvature k, of the plane curve C, obtained by projecting C on a plane perpendicular to the axis of helix i.e. they are connected by the relation t = k₁ sin α cos a k = k₁ sin² α where a is the constant angle at which the helix cut the generators. and
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