ANSWER

1) (a) Period of oscillation is affected by length.

Tempoh ayunan dipengaruhi oleh panjang bandul(b) As length increases, period of oscillation increases.

Semakin panjang bandul, semakin tempoh ayunan meningkat.(c) (i) To investigate the relationship between period of oscillation and length.

Untuk menyiasat hubungan antara tempoh ayunan dengan panjang.(ii) manipulated variable : length, pembolehubah dimanipulasikan : panjang, l

responding variable : period, T

pembolehubah bergerak balas : tempoh, T

fixed variable : mass of bob, m.

pembolehubah dimalarkan : jisim ladung, m(iii) Pendulum bob, stopwatch, thread, metre rule, stopwatch, retort stand.

Ladung bandul, jam randik, benang, pembaris meter, kaki retort dengan pengapit.

(iv)

(v) The apparatus is set up as shown.

Method of controlling manipulated variable :

- A pendulum of length 30.0 cm is set up.

Method of measuring responding variable:

- The pendulum bob is displaced slightly and released.

- The time taken for the pendulum to make 10 complete oscillations is measured with a stopwatch. The period is then calculated. The procedure is repeated with pendulum of lengths 40.0 cm, 50.0 cm, 60.0 cm, 70.0 cm and 80.0 cm.

Radas di susun seperti ditunjukkan

Cara mengawal pembolehubah dimanipulasikan : bandul ringkas dengan panjang 30.0 cm disediakan.

Cara mengukur pembolehubah bergerak balas :

- Bandul disesarkan sedikit dan dilepaskan.

- Masa yang diambil untuk 10 ayunan lengkap diukur dengan menggunakan jam randik. Tempoh dihitungkan. Prosedur diulangi dengan menggunakan bandul dengan panjang 40.0 cm, 50.0 cm, 60,0 cn , 700 cm dan 80.0 cm.(vi)

Length, / cm

Pangjang, / cmTime for 10 oscillations, t/s

Masa untuk 10 ayunan , t/sPeriod, T / s

Tempoh, T/s

30.0

40.0

50.0

60.0

70.0

80.0

(vii)

2) (a) (i) height pinpong ball is released, H

ketinggian bola pingpong dipelaskan, H (ii) height rebounded, h

ketinggian dipantulkan, h(iii) mass of pingpong ball.

jisim bola pingpong(b)

Height pingpong ball released, H /cm

Ketinggian bola pingpong dipelaskan, H /cmHeight rebounded, h/cm

Ketinggian dipantulkan, h/cm

20.015.0

40.030.0

60.045.0

80.060.0

100.075.0

(c)

(d) h is directly proportional to H

h berkadar terus dengan H(e) Avoid parallax error when taking the reading of the heights.

Elak ralat paralaks ketika mengambil bacaan ketinggian