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5 marksEffects of Forces

CAPE Physics Unit 1 · 2018 · Paper 2 · Question 5(b)(ii)

A uniform ladder 5.5 m long with a mass of 25 kg leans with its upper end against a smooth vertical wall. Its lower end rests on rough ground. The ladder is in equilibrium when its bottom end is 3.2 m from the wall and its top end rests against the wall.

Calculate the frictional force between the ladder and the ground.

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Other parts of this question

  1. 5(a)Define the term 'simple harmonic motion' (SHM).[2 marks]
  2. 5(b)Write the mathematical expression relating acceleration, a, to displacement, x, in simple harmonic motion.[2 marks]
  3. 5(c)Describe the interchange of the kinetic energy and potential energy of an oscillating system during simple harmonic motion.[3 marks]
  4. 5(b)(i)Sketch a diagram to represent the arrangement described in the scenario above showing ALL the forces acting and ALL the distances described.[4 marks]
  5. 5(e)(i)Calculate the period of oscillation for the mass.[3 marks]
  6. 5(e)(ii)Determine the period of the resulting SHM.[2 marks]

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