Solve the Problem $s ( t ) = - 5 \cos ( 6 \pi t )$

question 220

Multiple Choice

Solve the problem.
-The position of a weight attached to a spring is $s ( t ) = - 5 \cos ( 6 \pi t )$ inches after $t$ seconds. What is the maximum height that the weight rises above the equilibrium position?

• A) \(5 \mathrm { in }\).
• B) 6 in.
• C) \(\frac { 6 } { \pi } \mathrm { in }\).
• D) \(\frac { 5 } { 6 } \mathrm { in }\).

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