Question

Tolong bantuin ya please help me pakai cara ya no 7, 8, 9, dn 13 ya

Answer 1

9. b
P-Q-R-Q-P= 1 getaran, P-Q-R-Q-P= 1 getaran, P-Q-R= 1/2getaran
F= n/t = 2,5/ 2= 1,25Hz

Answer 2

8. dik = F2 = 3600N
A1 = 25 cm2
A2 = 240 cm2
dit = F1?
JWB = F1 = A1/A2 × F2
= 25×3600/240
= 375 N (D)