Skip to content

Course home

3.3 R: Forces and Newton's laws

3.3 R: Forces and Newton's laws

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839
Question 8

Two blocks XXX (mass 10 kg) and YYY (mass 4 kg) are joined by a light inextensible string passing over a smooth pulley at the top of a fixed wedge. Block X X\,X rests on a smooth face inclined at 60∘ 60^\circ\,60∘ to the horizontal. Block Y Y\,Y rests on a rough face inclined at 30∘ 30^\circ\,30∘ to the horizontal. The coefficient of friction between block Y Y\,Y and the surface is 0.5. The system is released from rest with the string taut.

a.

Find the tension in the string.

[7]
b.

Find the acceleration of the system and the direction of travel.

[2]
Markscheme

3.3 R: Forces and Newton's laws Questions

  1. A Level
  2. /Maths
  3. /3.3 R: Forces and Newton's laws

139 exam-style questions on AQA A Level Maths 3.3 R: Forces and Newton's laws, covering 3.3.1 Concept of a force and Newton's first law, 3.3.2 Newton's second law, 3.3.3 Weight and motion under gravity, 3.3.4 Newton's third law and equilibrium, 3.3.5 Addition of forces and resultants (A-level only), and 3.3.6 Friction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank