( ( ( ( ( ( ( This kind ) ( of ( wave pattern ) ) ) ( is ( called ( periodic waves ) ) ) ) , ) and ) ( ( its movement ) ( ( is also ) ( classified ( with ( ( oscillating springs ) ( as ( ( simple harmonic ) motion ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT This) (NN kind)) (PP (IN of) (NP (NN wave) (NN pattern)))) (VP (VBZ is) (VP (VBN called) (NP (JJ periodic) (NNS waves))))) (, ,) (CC and) (S (NP (PRP$ its) (NN movement)) (VP (VBZ is) (ADVP (RB also)) (ADJP (VBN classified) (PP (IN with) (S (VP (VBG oscillating) (NP (NNS springs)) (PP (IN as) (NP (ADJP (JJ simple) (JJ harmonic)) (NN motion))))))))) (. .)))
This kind of wave pattern is called periodic waves, and its movement is also classified with oscillating springs as simple harmonic motion.
(ROOT (S (NP (NP (DT An) (NN object)) (VP (VBN attached) (PP (TO to) (NP (NP (DT a) (NN spring)) (VP (VBG sliding) (PP (IN on) (NP (DT a) (JJ frictionless) (NN surface)))))))) (VP (VBZ is) (NP (NP (DT an) (JJ uncomplicated) (NN type)) (PP (IN of) (NP (ADJP (JJ simple) (JJ harmonic)) (NN oscillator))))) (. .)))
An object attached to a spring sliding on a frictionless surface is an uncomplicated type of simple harmonic oscillator.