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.

Question

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.

lgbasallote · Answer

so which one don't you know?

anonymous · Answer

all of it. i don't understand this.

lgbasallote · Answer

not even solve for t?

anonymous · Answer

no.

mimi_x3 · Answer

have you atleast tried it

anonymous · Answer

i have seen this question before, and wonder where it comes from, because something is wrong with it

mimi_x3 · Answer

whats wrong with it?
its a simple harmonic motion problem

anonymous · Answer

for one thing, how is a height negative?

mimi_x3 · Answer

lol i havent solved it yet tho

but it can i think; since its a cosine curve and the amplitude can be a negative