# What is Epicycloid and hypocycloid?

## What is Epicycloid and hypocycloid?

is that epicycloid is (geometry) the locus of a point on the circumference of a circle that rolls without slipping on the circumference of another circle while hypocycloid is (geometry) the locus of a point on the circumference of a circle that rolls without slipping inside the circumference of another circle.

What is a hypocycloid used for?

noun Geometry. a curve generated by the motion of a point on the circumference of a circle that rolls internally, without slipping, on a given circle.

### What does the word hypocycloid mean?

: a curve traced by a point on the circumference of a circle rolling internally on the circumference of a fixed circle.

What is the equation of hypocycloid?

The point P=(x,y) is described by the equations: x=(a−b)cosθ+bcos((a−bb)θ) y=(a−b)sinθ−bsin((a−bb)θ)

#### What is the difference between epicycloid and cycloid?

is that epicycloid is (geometry) the locus of a point on the circumference of a circle that rolls without slipping on the circumference of another circle while cycloid is (geometry) the locus of a point on the circumference of a circle that rolls without slipping on a fixed straight line.

What is a cycloid curve?

Cycloid, the curve generated by a point on the circumference of a circle that rolls along a straight line. If r is the radius of the circle and θ (theta) is the angular displacement of the circle, then the polar equations of the curve are x = r(θ – sin θ) and y = r(1 – cos θ).

## What does a hypo cycloid look like?

In geometry, a hypocycloid is a special plane curve generated by the trace of a fixed point on a small circle that rolls within a larger circle. As the radius of the larger circle is increased, the hypocycloid becomes more like the cycloid created by rolling a circle on a line.

What is an involute curve?

In mathematics, an involute (also known as an evolvent) is a particular type of curve that is dependent on another shape or curve. An involute of a curve is the locus of a point on a piece of taut string as the string is either unwrapped from or wrapped around the curve.

### What is the difference between cycloid and Trochoid?

As nouns the difference between trochoid and cycloid is that trochoid is (mathematics) the curve traced by a point on a circle as it rolls along a straight line while cycloid is (geometry) the locus of a point on the circumference of a circle that rolls without slipping on a fixed straight line.

Is cycloid a conic section?

In geometry, a cycloid is the curve traced by a point on a circle as it rolls along a straight line without slipping. A cycloid is a specific form of trochoid and is an example of a roulette, a curve generated by a curve rolling on another curve….External links.

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#### What is the difference between Epicycloid and cycloid?

How is a hypocycloid related to a cycloid?

As the radius of the larger circle is increased, the hypocycloid becomes more like the cycloid created by rolling a circle on a line. If the smaller circle has radius r, and the larger circle has radius R = kr, then the parametric equations for the curve can be given by either:

## What does the hypocycloid stand for in Jedi?

Take the quiz! What does JEDI stand for? But the minimum of friction is attained when the two flanks for the tooth are drawn into one common hypocycloid, as in Fig. 53. The curve generated by rolling on the concave side is called a ‘ hypocycloid ‘.

What do you call a hypocycloid with three cusps?

A hypocycloid with three cusps is known as a deltoid . A hypocycloid curve with four cusps is known as an astroid . The hypocycloid with two cusps is a degenerate but still very interesting case, known as the Tusi couple . Hypocycloids “rolling” inside one another.

### When is the first point of a hypocycloid at minimum radius?

If , then the first point is at minimum radius, and the Cartesian parametric equations of the hypocycloid are If instead so the first point is at maximum radius (on the Circle ), then the equations of the hypocycloid are An -cusped non-self-intersecting hypocycloid has .