Form 3 Physics - Boys'' Secondary Mosta Half-Yearly Examinations - Kullegg Maria Regina, 2012 Page 3

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2.
This question is about Hooke’s law.
metre rule
a) Hooke’s law states that _______________
stand
is
directly
proportional
to
the
_______________
as
long
as
the
spring
______________ limit is not exceeded. [3]
pointer
weights
b) A spring is 30 cm long. When a 2 N weight
is added, it becomes 33 cm long.
(i) What is the extension of the spring?
________________________________ [1]
(ii) If another 2N load is added, what will the new length of the spring be?
____________________________________________________________ [2]
c) Name two precautions taken during this experiment.
(i) __________________________________________________________
(ii) __________________________________________________________ [2]
3.
This question is about different types of forces.
Friction, weight, reaction, tension, engine force, lift, upthrust and air resistance
are different types of forces. Label the force represented in each diagram.
[8]
A
C
B
D
D =
C =
A =
B =
E
G
H
F
H =
G =
E =
F =
Physics Half yearly exam 2012 – Track 3 - Form 3
Page 3 of 8

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