Answer:
The first occurence of t for which x = 0 is t = 0.5.
Explanation:
The harmonic motion is described by the following equation.
What is the first occurrence of a value of t for which x = 0?
This is t when
. So
The inverse of the cosine is the arcosine. So we apply the arcosine function to both sides of the equality.
The first occurence of t for which x = 0 is t = 0.5.