Question

Bantuin nomor 3 dong, pake cara yaa

Answer 1

Y = 4 sin 6πt

rumus gerak hrmonik 
 y = A sin ωt

amplitudo = A = 4

ω = 2πf
6π = 2π x f
6π = f
2π
f = 3Hz 


simpangan = y 
masukkan nilai t = 0.5sekon 

y = 4 sin 6 π ( 0.5)
   = 4 sin 3π