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Question 1 · 4 marks
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A 0.5 kg particle hangs at rest from a vertical elastic string of natural length 0.8 m and modulus 19.6 N. Take
g
=
9.8
g=9.8
g
=
9.8
m
s
−
2
^{-2}
−
2
.
(a)
Find the extension at equilibrium.
2 marks
m