Forces, Movement & Changing Shape
1. This question has 2 part(s).
1.1. A student investigates the extension of an elastic band for different forces.
(i) List the laboratory apparatus that the student needs for this investigation.
[3]
(ii) Extension, force and temperature are variables for this investigation.
Draw a line from each variable to its type.
[2]
(iii) Describe how the student can measure the extension of the elastic band when he adds a force of 12 N.
[2]
1.2. The student obtains this data as he first adds weights to the elastic band (loading) and as he then removes weights from the band (unloading).
Force in N | Extension in cm (Loading) |
|---|---|
0 | 0.0 |
2 | 2.3 |
4 | 5.3 |
6 | 9.8 |
8 | 15.3 |
10 | 20.0 |
Force in N | Extension in cm (Unloading) |
|---|---|
0 | 0.0 |
1 | 1.4 |
3 | 5.0 |
7 | 14.8 |
9 | 19.1 |
10 | 20.0 |
He plots the loading data on a graph as shown.
(i) Suggest how the student could improve the quality of his data.
[2]
(ii) Draw a curve of best fit through the loading data.
[1]
(iii) On the same axes, plot the unloading data.
[2]
(iv) Draw a curve of best fit through the unloading data.
[1]
(v)The student concludes that the band is an elastic material and that it obeys Hooke’s law.
Discuss whether his conclusion is correct.
You should support your argument with data.
[3]
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
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