Page 55 - SP015 Past Years PSPM Chapter 6 -14 Ver 2020
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PSPM SP015
PSPM JUN 2000/2002 SF025/2 No. 10(b)
7.
load F (N)
A
300
200
100
2 4 6 8 10 12 elongation (mm)
0
FIGURE 11.1
FIGURE 11.1 shows an elongation of a metal wire with diameter 1.5 mm and original
length 1.0 m exerted by a load F until it breaks at A. Base on the graph,
(a) determine the stress on this wire when it breaks. [3 m]
(b) calculate the Young’s modulus of the wire. [4 m]
PSPM 2003/2004 SF017/2 No. 6
8. tension (N)
80
60
40
20
0 elongation (mm)
1 2 3 4 5 6 7 8 9
FIGURE 11.2
FIGURE 11.2 shows the elongation of a wire as tension is increased. Calculate the
work done to elongate the wire to 9 mm. [3 m]
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