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Applications of Forces

Applications of Forces

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Question 74

A uniform ladder AB AB\,AB of mass 30 kg and length 6 m is at rest with one end A A\,A on rough horizontal ground and the other end B B\,B against a smooth vertical wall. The coefficient of friction between the ladder and the ground is 0.3. The ladder makes an angle θ \theta\,θ with the ground.

Given that the ladder is on the point of slipping.

a.

Find the magnitude of the frictional force of the ground on the ladder

[2]
b.

Find the value of θ\thetaθ, to 1 decimal place.

[5]
Markscheme

Applications of Forces Questions

  1. A Level
  2. /Maths
  3. /Applications of Forces

130 exam-style questions on Edexcel A Level Maths Applications of Forces, covering 7.1 Static Particles, 7.2 Modelling with Statics, 7.3 Friction and Static Particles, 7.4 Static Rigid Bodies, 7.5 Dynamics and Inclined Planes, and 7.6 Connected Particles 2. Each one has a worked solution and a mark scheme showing where the marks go.

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