- #1

- 115

- 0

(a) t = 0 to t = 14 s

cm

(b) t = 14 s to t = 28 s

cm

(c) t = 0 to t = 7 s

cm

(d) t = 7 s to t = 14 s

cm

x = Acos([tex]\omega[/tex] * t * [tex]\delta[/tex])

[tex]\omega[/tex] = 2[tex]\pi[/tex] / T

[tex]\omega[/tex] = 2[tex]\pi[/tex] / 56

Since x = 0 when t = 0

Then [tex]\delta[/tex] = [tex]\pi[/tex] / 2

correct?

for part A)

x = 18cm * cos[2[tex]\pi[/tex] / 56 * 14s + [tex]\pi[/tex] / 2] - cos[2[tex]\pi[/tex] / 56 * 0s + [tex]\pi[/tex] / 2]

Is this good?