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5 marksMotions

CAPE Physics Unit 1 · 2005 · Paper 2 · Question 5(a)(ii)

Figure IV shows a light aeroplane.

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 must pass through the propeller EACH second?

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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(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]
  3. 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]
  4. 5(b)(iii)Find the size of the lift force on the plane and the banking angle θ.[1 mark]
  5. 5(b)(iv)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…[15 marks]

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