Question

50 POINTS FOR THE CORRECT ANSWER

Answer 1

Answer:

Step-by-step explanation:

angular frequency

ω = 2π/ T = 2π/4 = π/2 rad/s

A = 7 inch

Starts at rest (maximum swing, |A| = 7) so cosine function is easiest

x = -7cos(πt/2)

Answer 2

ANSWER:

The amplitude is 6.

We can use the sine here. I'm assuming that the period is 4 seconds. so each second is

• 2π/4
• π/2 rads

So, we have this function

• y = 6sin(π × t/2).

NOTE: See picture attached.