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12 marksConservation of Energy

CAPE Physics Unit 1 · 2006 · Paper 2 · Question 7(b)(iv)

Figure 5 shows the piston of an automobile engine. The motion of the piston is simple harmonic. The stroke of the engine (twice the amplitude) is 0.100 m and the engine runs at 3500 revolutions per minute. The mass of the piston is 0.450 kg.

the average power required to accelerate the piston from rest to the speed found in (b)(ii).

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Other parts of this question

  1. 7(a)(i)With the aid of sketch graphs, give an account of the energy transformations which occur during one complete cycle of this system.[8 marks]
  2. 7(a)(ii)Explain why a damped oscillating system experiences a progressive decrease in its amplitude.[8 marks]
  3. 7(b)Calculate:[1 mark]
  4. 7(b)(i)the acceleration of the piston at the endpoint of the stroke.[12 marks]
  5. 7(b)(ii)the speed of the piston at the midpoint of the stroke.[12 marks]
  6. 7(b)(iii)the kinetic energy of the piston at the midpoint of the stroke.[12 marks]

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