Page 61 - Hybrid PBD KSSM 2021 Tg 4 - Fizik

Fizik Tingkatan 4 Bab 1
FOKUS KBAT

Hubungan antara tempoh ayunan bandul dan panjang bandul diberi oleh TIP Menjawab
persamaan berikut. KBAT Mengaplikasi KBAT Menganalisis
The relationship between the period of oscillation and the length of the pendulum is given by the Hubungan dua pemboleh ubah
following equation. secara berkadar terus adalah
L berbentuk graf linear (garis
T = 2p lurus).
g The relationship of two directly
proportional variables is in the form of
a linear graph (straight line).
di mana, / where,
T = Tempoh ayunan bandul / Period of oscillation of the pendulum Susun semula persamaan
L = Panjang bandul / Length of pendulum dengan menjadikan T sebagai
2
g = Pecutan graviti / Gravitational acceleration perkara rumus.
Rearrange the equations by making T 2
2
2
Diberi bahawa T ∝L / Given that T ∝L. as the subject of the formula.
Terangkan kaedah untuk menentukan nilai pecutan graviti melalui analisis graf. Bandingkan formula dengan
Explain the method to determine the value of gravitational acceleration through graph analiysis. persamaan garis lurus y = mx+c.
Compare the formula with the
Bentuk graf T ∝L ialah graf linear (garis lurus) equation of a straight line
2
y = mx+c.
2
The shape of the graph T ∝L is a linear graph (straight line)
Paksi –y
Paksi x
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T = 2p L y– axis x– axis
g
L y = m x + c
2
T = 4p 2
g
Susun semula / Rearrange 4p 2
2
4p 2 T = L
L T = L g
2
g
Daripada perbandingan dengan persamaan garis lurus, dapat dilihat bahawa
4p 2
nilai kecerunan, m = L
g
From the comparison with the equation of a straight line, it can be seen that the gradient of the graph,
4p 2
m = L
g

Oleh itu, nilai pecutan graviti, g boleh dikira dengan menggunakan rumus
berikut.
Therefore, the value of the gravitational acceleration, g can be calculated using the following formula.

4p 2
g =
m
di mana m ialah nilai kecerunan graf.
where m is the value of the graph's gradient

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01 HYBRID PBD FIZIK F4.indd 20 05/11/2021 8:19 AM