Skip to content

Course home

3.4 Forces

3.4 Forces

EasyMediumHard
123456789101112131415161718192021
Question 18

A car of mass 1200 kg tows a trailer of mass 400 kg along a straight horizontal road, using a light rigid tow-bar.

The engine of the car provides a constant driving force of 3000 N. A constant resistance of 500 N acts on the car and a constant resistance of 300 N acts on the trailer.

a.

Find the acceleration of the car and trailer.

[3]
b.

Find the tension in the tow-bar.

[2]
Markscheme

3.4 Forces Questions

  1. A Level
  2. /Maths
  3. /3.4 Forces

87 exam-style questions on OCR (MEI) A Level Maths 3.4 Forces, covering 3.4.1 Language relating to forces, 3.4.2 Acceleration due to gravity, 3.4.3 Identify forces and draw force diagrams, 3.4.4 Resultant of concurrent forces, 3.4.5 Equilibrium of a particle, 3.4.6 Resolve a force into components (A-level only), 3.4.7 Equilibrium condition for resultant zero (A-level only), 3.4.8 Forces in equilibrium sum to zero (A-level only), 3.4.9 Equations for a particle in equilibrium (A-level only), 3.4.10 Frictional force and normal contact force (A-level only), 3.4.11 Model friction with F ≤ μR (A-level only), and 3.4.12 Apply Newton's Laws to friction problems (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank