Solve the Problem $s ( t ) = - 2 \cos ( 6 \pi t )$

question 49

Multiple Choice

Solve the problem.
-The position of a weight attached to a spring is $s ( t ) = - 2 \cos ( 6 \pi t )$ inches after $t$ seconds. What is the maximum height that the weight rises above the equilibrium position?

• A) \(6 \mathrm { in }\).
• B) \(\frac { 6 } { \pi } \mathrm { in }\).
• C) \(2 \mathrm { in }\).
• D) \(\frac { 1 } { 3 } \mathrm { in }\).