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Figure 1 shows a wheelbarrow. (PMR 2005)

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Chapter 10 : SIMPLE MACHINE
PAPER 2
1 Figure 1 shows a wheelbarrow. (PMR 2005)
Figure 1.1
(a) On Figure 1.1, label the position of the fulcrum.
(1 mark)
(b) (i) Based on Diagram 1.1, state the class of lever of the wheelbarrow.
______________________________________________________________
(1 mark)
(ii) Give one reason for your answer in (b)(i).
____________________________________________________________
(1 mark)
(c) Based on Figure 1.2, choose one tool with the same class of lever as the
wheelbarrow in Figure 1.1.
Mark ( ) in the box for the tool.
Fishing rod Nutcracker Pliers
Figure 1.2
(1 mark)
Prepared by : Lau SC 2012

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Chapter 10 : SIMPLE MACHINE
2.
(d) Figure 1.3 shows the situation when a force and a load are balanced.
Figure1.3
Calculate force P needed to balance the metre rule.
Use the following formula:
Load x Distance of load from fulcrum = Force x Distance of force from the
fulcrum
_________________________________________________________ (2 marks)
Diagram 2.1 shows a pair of pliers. (PMR 2007)
Diagram 2.1
(a) (i) What is the class of lever of the pair of pliers?
_____________________________________________________________
(1 mark)
(ii) State one reason for the answer in 2(a) (i).
_____________________________________________________________
(1 mark)
Prepared by : Lau SC 2012

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PAPER 2 1 Figure 1 shows a wheelbarrow. (PMR 2005) Figure 1.1 (a) On Figure 1.1, label the position of the fulcrum. (1 mark) (b) (i) Based on Diagram 1.1, state the class of lever of the wheelbarrow. ______________________________________________________________ (1 mark) (ii) Give one reason for your answer in (b)(i). ____________________________________________________________ (1 mark) (c) Based on Figure 1.2, choose one tool with the same class of lever as the wheelbarrow in Figure 1.1. Mark ( ? ) in the box for the tool. Fishing rod Nutcracker Pliers Figure 1.2 (1 mark) 2. 3. (d) Figure 1.3 shows the situation when a force and a load are balanced. Figure1.3 Calculate force P needed to balance the metre rule. Use the following formula: Load x Distance of load from fulcrum = Force x Distance of force from the fulcrum _________________________________________________________ (2 marks) Diagram 2.1 shows a pair of pliers. (PMR 2007) Diagram 2.1 (a) (i) What is the class of lever of the pair of pliers? __________________________________ ...
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