Question

The equation 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.

Answer 1

\[h=7\cos(\frac{ \pi }{ 3 }t)\]

Answer 2

@Zale101 @Serenity74 @imqwerty

Answer 3

@rebeccaxhawaii

Answer 4

@mathmale

Answer 5

@Brill

Answer 6

@DemolisionWolf

Answer 7

@freckles

Answer 8

@SolomonZelman