Page 49 - Anatomy of a Robot

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34 CHAPTER TWO
3. We know that a stronger spring will make the weight bounce up and down faster
than the weaker spring. To try this, put a second rubberband right next to the
first one so that they act in unison and use the original single weight. This illus-
trates how v increases with the spring constant K (see Figure 2-11).

Heavier Weight on a Spring
Frequency = 1.5, Damping = 0
2.5
2
Position x Position x Position x Position x 1.5

1

0.5

0
0 2 4 6 8 10
Time t
Time tTime t
Time t
FIGURE 2-10 The movement of a heavier weight on a spring

Weight on a Heavier Spring
Frequency = 5, Damping = 0
2.5

2
Position x Position x Position x Position x 1.5

1

0.5
0
0 2 4 6 8 10
Time t
Time t
Time tTime t
FIGURE 2-11 The movement of a weight on a heavier (more powerful) spring