Rajah menunjukkan seorang lelaki sedang menolak troli dalam dua situasi. Lelaki itu mandapati troli yang lebih berat beban adalah sukar untuk ditolak dan sukar untuk dihentikan.
Based on the information and observation:
Berdasarkan maklumat dan pemerhatian:
(a) state one suitable inference that can be made.
Nyatakan satu inferens yang sesuai.
(b) State one appropriate hypothesis for an investigation.
Nyatakan satu hipotesis yang sesuai.
(c) with the use of apparatus such as jigsaw blade, plasticine, G-clamps and other apparatus, describe one experiment to investigate the hypothesis stated in (b).
Dengan menggunakan radas seperti bilah gergaji, plastisin, apit-G dan lain-lain radas, terangkan satu eksperimen untuk menyiasat hipotesis yang dinyatakan di (b).
In your description, state clearly the following:
Dalam penerangan anda, nyatakan dengan jelas perkara berikut:
(i) The aim of the experiment
Tujuan eksperimen
(ii) The variables in the experiment
Pembolehubah dalam eksperimen
(iii)The list of apparatus and materials
Senarai radas dan bahan.
(iV) The arrangement of the apparatus.
Susunan radas.
(v) The procedure of the experiment which should include one of the method of controlling the manipulated variable and one method of measuring the responding variable.
Prosedur eksperimen yang mesti termasuk satu kaedah mengawal pembolehubah dimanipulasikan dan satu kaedah mengukur pembolehubah bergerak balas.
(vi) The way to tabulate data.
Cara untuk menjadualkan data.
(vii) The way to analyse the data.
Cara untuk menganalisis data.
Answer :
Inference :
The inertia depends on the mass
Hypothesis : As the mass increases as the inertia increases
Aim : To investigate the relationship between the mass and the inertia
List of variables:
Manipulated variable : The mass
Responding variable : The inertia/ period of oscillation/ time taken for 10 oscillations
Fixed variable : Number of oscillatiom/the lenght of jigsaw blade,
List of apparatus : Jigsaw blade, plasticine, G-clamp, stopwatch, and balance
Arrangement of apparatus:
The procedure of experiment:
-The mass of the plasticine is measured by a balance , m = 30.0 g
The jigsaw blade is displaced horizontally to one side and then released so that it oscillate. The time taken for 10 oscillations, t is recorded by a stopwatch./The period of oscillation is recorded.
T=t/10
The experiment is repeated 4 times by using plasicine balls with mass = 40.0g, 50.0 g, 60.0 g, and 70.0 g
Tabulation of data:
Analysing data:
Plot the graph of period, T against mass, m