The document discusses vibration, defining it as the back and forth motion of objects through a balance point. It provides definitions for key terms related to vibration, including amplitude, period, and frequency. The period is the time for one full vibration, while frequency is the number of vibrations per second. Several formulas are provided to calculate period and frequency based on number of vibrations and time. An example calculation is given to find the period and frequency of a swing vibrating 80 times in 20 seconds.

1. By : Group 4
With English and Indonesian
Languages

2. 1) Risa Rahmatia Firsta
2) Karinta Elmira Amalia
3) M. Daffa Fakhri
4) M. Riyandra Alfariz

6. Vibration is a back and forth motion of objects on a
regular basis through the balance point. One
characteristic is the amplitude of vibration (the
largest intersection of a vibration).
Getaran adalah gerak bolak-balik benda secara
teratur melalui titik keseimbangan. Salah satu
ciri getaran adalah adanya amplitudo ( simpang
terbesar suatu getaran ).

7. 1 Vibration = 1-2-3-2-1
½ Vibration = 1-2-3
¼ Vibration = 1-2 / 2-3

8. Each vibrating body always has a
frequency and period vibrate.

9. Setiap benda yang bergetar
selalu memiliki frekuensi dan
periode getar.

12. The period is the time it takes the object
to perform one-time vibration. Period is
Expressed in units of second.

13. Period formula can be expressed as the following :
T =
𝑡
𝑛
where :
T = Period Vibration ( s )
t = Number of time
n = Number of vibration

14. Periode adalah waktu yang di perlukan benda
untuk melakukan satu kali getaran. Periode
dinyatakan dalam satuan sekon.

15. Rumus periode dapat dinyatakan sebagai berikut :
T =
𝑡
𝑛
Dimana :
T = Periode Getaran
t = Waktu yang diperlukan
n = Jumlah Getaran

16. Frequency is the number of
vibrations in a second. Unit of
frequency is the hertz (Hz)

17. The frequency can be expressed in units of
mathematics as follows :
f =
𝑛
𝑡
Where :
f = Frequency of Vibration
t = Number of time
n = Number of vibration

18. Frekuensi adalah jumlah getaran
dalam satu sekon. Satuan
frekuensi adalah hertz (Hz)

19. Frekuensi dapat dinyatakan dalam satuan matematika
sebagai berikut :
f =
𝑛
𝑡
Dimana :
f = frekuensi getaran
t = Waktu
n = Jumlah getaran

20. f =
1
𝑇
Where :
f = Frequency of
Vibration
T = Period of
Vibration
T =
1
𝑓

21. f = 1
𝑇
Dimana :
f = frekuensi
getaran
T = periode
getaran
T =
1
𝑓

22. 1. If the swing is simple vibrate as much as 80 times
in 20 second, then specify the period of vibration
and frequency of the swing ?
1. Jika ayunan sederhana bergetar
sebanyak 80 kali dalam waktu 20 sekon,
maka tentukan periode getaran dan
frekuensi ayunan !

23. Known :
n=80vibration
t= 20 s
Unknown:
T = .....?
f =.....?
Solution : T =
𝑡
𝑛
=
20
80
=
1
4
s
F =
𝑛
𝑡
=
80
20
= 4 hz