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1.
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Anda dikehendaki menjalankan satu eksperimen untuk menyiasat hubungan antara tempoh ayunan, T dengan jisim, m.
You are going to carry out an experiment to investigate the relationship between period of oscillation, T and mass, m.
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Rajah 1.1
Diagram 1.1
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Jalankan eksperimen anda dengan menggunakan langkah-langkah di bawah:
Carry out the experiment using the steps below:
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- Susun radas seperti yang ditunjukkan dalam Rajah 1.1.
Set up the apparatus as shown in Diagram 1.1.
- Lekatkan seketul plastisin berjisim \(15.0\text{ g}\) di hujung bilah gergaji.
Fix a piece of \(15.0\text{ g}\) plasticine to the free end of the jigsaw blade.
- Sesarkan bilah gergaji secara mengufuk dengan sudut \(30^{\circ}\) dan kemudian lepaskan supaya plastisin itu berayun.
Displace the free end of the jigsaw blade horizontally with an angle of \(30^{\circ}\) and then release it so that the plasticine oscillates.
- Catatkan masa, \(t_1\)untuk 10 ayunan lengkap plastisin itu.
Record the time, \(t_1\) for 10 complete oscillations of the plasticine.
- Ulangi langkah 3 dan 4 dan catatkan masa sebagai \(t_2\).
Repeat steps 3 and 4 and record the time as \(t_2\).
- Ulangi langkah 2 hingga 5 menggunakan plastisin yang berjisim, \(m=30.0,45.0,60.0\) dan \(75.0\text{ kg}\).
Repeat steps 2 to 5 using plasticine of mass, \(m=30.0,45.0,60.0\) and \(75.0\text{ kg}\).
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Berdasarkan eksperimen yang dijalankan,
Based on the experiment conducted,
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(a)
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Nyatakan satu hipotesis yang sesuai.
State one suitable hypothesis.
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[1 markah]
[1 mark] |
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(b)
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Nyatakan
State
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(i)
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Pemboleh ubah dimanipulasi
Manipulated variable
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[1 markah]
[1 mark] |
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(ii)
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Pemboleh ubah bergerak balas
Responding variable
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[1 markah]
[1 mark] |
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(iii)
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Pemboleh ubah dimalarkan
Constant variable
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[1 markah]
[1 mark] |
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(c)
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Rekodkan nilai \(t,T\) dan \(T^2\) bagi setiap nilai \(m\) dalam Jadual 1 di bawah.
Record the value of \(t,T\) and \(T^2\) for each value of \(m\) in Table 1 below.
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| \(m\text{ (g)}\) |
Masa untuk 10 ayunan, \(t\text{ (s)}\)
Time for 10 oscillations, \(t\text{ (s)}\)
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\(t_{purata} \text{ (s)}\)
\(t_{average} \text{ (s)}\)
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| \(t_1\text{ (s)}\) |
\(t_2\text{ (s)}\) |
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Jadual 1
Table 1
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[3 markah]
[3 marks] |
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(d)
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Pada kertas graf, plotkan graf \(T^2\) melawan \(m\).
On the graph paper, plot the graph of \(T^2\) against \(m\).
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[3 markah]
[3 marks] |
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(e)
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Berdasarkan graf anda di (d), nyatakan hubungan antara \(T^2\) dan \(m\).
Based on your graph in (d), state the relationship between \(T^2\) and \(m\).
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[1 markah]
[1 mark] |
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(f)
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(i)
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Tentukan nilai \(T\) apabila \(m=50\text{ g}\).
Tunjukkan pada graf itu bagaimana anda menentukan nilai \(T\).
Determine the value of \(T\) when \(m=50\text{ g}\).
Show on the graph, how you determine the value of \(T\).
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\(T=\underline{\quad\quad\quad\quad\quad\quad\quad\quad}\) |
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[1 markah]
[1 mark] |
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(ii)
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Kira kecerunan graf, \(h\).
Tunjukkan pada graf itu bagaimana anda menentukan nilai \(h\).
Calculate the gradient of the graph, \(h\).
Show on the graph, how you determine the value of \(h\).
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\(h=\underline{\quad\quad\quad\quad\quad\quad\quad\quad}\) |
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[2 markah]
[2 marks] |
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(g)
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Nyatakan definisi secara operasi bagi inersia dalam eksperimen ini.
State the operational definition for inertia in this experiment.
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[1 markah]
[1 mark] |
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