Page 45 - Hybrid PBD KSSM 2021 Tg 5 - Fizik

Fizik Tingkatan 5 Bab 1
(d) Sekiranya kabel pengangkat dalam Rajah 1.2 putus, berapakah bacaan pada skala penimbang?
If the cable of the lift in Diagram 1.2 snaps, what will be the reading on the weighing scale?
0 N
[1 markah / 1 mark]

(e) Berapakah bacaan skala penimbang jika lif bergerak naik dengan pecutan tetap 2 m s ?
–2
What will be the reading of the weighing scale if the lift is moving up with constant acceleration of 2 m s ?
–2
R – W = 50(2)
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R = 500 + 100 = 600 N
[1 markah / 1 mark]

Bahagian B
2. (a) Rajah 2.1 menunjukkan spring keluli dengan pemalar spring 50 N m dan pemanjangan x cm.
–1
–1
Diagram 2.1 shows a steel spring with a spring constant of 50 N m and an extension of x cm.

500 g

Rajah 2.1
Diagram 2.1
(i) Nyatakan hukum Hooke.
Define Hooke’s law.
[2 markah / 2 marks]
(ii) Berdasarkan Rajah 2.1, hitung pemanjangan x cm yang berlaku pada spring.
Based on Diagram 2.1, calculate the extension, x cm occurs on the spring.
[2 markah / 2 marks]
(iii) Berdasarkan Rajah 2.2(a) dan Rajah 2.2(b) di bawah, jelaskan faktor-faktor yang mempengaruhi
pemanjangan suatu spring. Dengan menggunakan faktor-faktor yang dijelaskan, lakarkan graf bagi
daya yang bertindak melawan pemanjangan spring
Based on Diagram 2.2(a) and Diagram 2.2(b) below, explain the factors that will affect the extension of a spring. By using the
factors described, sketch a graph of the force acting on the spring against the extension of the spring.

Rajah 2.2(a) Rajah 2.2(b)
Diagram 2.2(a) Diagram 2.2(b)
[6 markah / 6 marks]

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Bab 1.indd 33 11/19/21 4:05 PM