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15 marksMotions

CAPE Physics Unit 1 · 2005 · Paper 2 · Question 5(b)(iv)

To turn, an aeroplane must "bank" as shown in Figure V, so that the lift force is no longer vertical. Assume the aeroplane remains in level flight and travels at constant speed.

Each passenger on the light aeroplane must also experience a resultant unbalanced force to move in a circular path. With the aid of a diagram state how this force is provided.

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Other parts of this question

  1. 5(a)(i)Explain using Newton's laws how the propeller of a light aeroplane like the one shown in Figure IV is able to provide forward thrust.[1 mark]
  2. 5(a)(ii)The forward thrust caused by the propeller of an aeroplane is 18 000 N and the air flowing through it leaves with a velocity of 250 m s⁻¹. What mass of air…[5 marks]
  3. 5(b)(i)Draw a diagram like the one in Figure V with arrows to show the direction of the external forces acting on the aeroplane as it turns. On a second, similar…[1 mark]
  4. 5(b)(ii)Calculate the radius of the circular path for a plane of mass 3 000 kg with a horizontal speed of 120 km per hour if the resultant force acting is 16 000 N.[1 mark]
  5. 5(b)(iii)Find the size of the lift force on the plane and the banking angle θ.[1 mark]

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