Page 129 - Physics

Mechanical properties of matter

6. Repeat the experiment with masses of 100 g, 150 g and 200 g. Record the respective

pointer positions as X , X and X .
4
3
2
Clamp

Retort stand

Coil spring

Metre rule

Pointer

Mass

Figure 6.3

7. Tabulate the results of your observation in Table 6.1.

Table 6.1: Experimental results
Mass (g) on holder Force on spring (N) Extension (cm) F
m×g e = X - X ) k = ( N cm)
F = ( i 0 e
100
0
50
100
150
200

Gravitational acceleration (g) = 0.01 N/g

Questions
F
(a) Comment on the values of e
(b) What is the relationship between tension and extension?
(c) Plot a graph of force (F) against extension (e) of the spring.
(d) Give an explanation for the shape of the graph.

(e) Use the graph to determine the constant of proportionality in this case.

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Physics Form 1 Final.indd 123 16/10/2024 20:57