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1 markMachines and Movement

CSEC Integrated Science · 2008 · Paper 2 · Question 2(b)(i)a)

Four different classes of levers are illustrated: scissors (A), wheelbarrow (B), fishing rod (C), and crowbar removing a nail (D).

Identify which lever shown in Figure 2 is a second-order lever.

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Other parts of this question

  1. 2(a)Complete Table 2 by classifying each machine as a pulley, lever, or inclined plane, and state how each makes work easier.[4 marks]
  2. 2(b)(i)b)Identify which lever shown in Figure 2 is a third-order lever.[1 mark]
  3. 2(b)(ii)Label lever D in Figure 2 to indicate the positions of the fulcrum (F), effort (E), and load (L).[1 mark]
  4. 2(c)(i)From Figure 3, estimate the mechanical advantage for a load of 5 N.[1 mark]
  5. 2(c)(ii)Calculate the effort applied for a load of 5 N using the mechanical advantage from Figure 3.[2 marks]
  6. 2(c)(iii)Describe the trend shown by the graph in Figure 3.[2 marks]
  7. 2(c)(iv)Suggest a reason for the trend observed in Figure 3.[1 mark]
  8. 2(d)(i)Suggest the physical effect on the scissors of leaving them by the sink.[1 mark]
  9. 2(d)(ii)Suggest the effect on the function of the scissors.[1 mark]

More practice: the rest of this paper · more Machines and Movement questions · all CSEC Integrated Science past papers