anonymous
  • anonymous
The equation h=7cos(pi/3 t) models the height h in centimeters after t seconds of a weight attached to the end of a spring that has been stretched and then released. a. Solve the equation for t. b. Find the times at which the weight is first at a height of 1 cm, of 3 cm, and of 5 cm above the rest position. Round your answers to the nearest hundredth. c. Find the times at which the weight is at a height of 1 cm, of 3 cm, and of 5 cm below the rest position for the second time. Round your answers to the nearest hundredth.
Mathematics
chestercat
  • chestercat
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lgbasallote
  • lgbasallote
so which one don't you know?
anonymous
  • anonymous
all of it. i don't understand this.
lgbasallote
  • lgbasallote
not even solve for t?

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anonymous
  • anonymous
no.
Mimi_x3
  • Mimi_x3
have you atleast tried it
anonymous
  • anonymous
i have seen this question before, and wonder where it comes from, because something is wrong with it
Mimi_x3
  • Mimi_x3
whats wrong with it? its a simple harmonic motion problem
anonymous
  • anonymous
for one thing, how is a height negative?
Mimi_x3
  • Mimi_x3
lol i havent solved it yet tho but it can i think; since its a cosine curve and the amplitude can be a negative

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