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Edexcel A-Level Physics AS 1.3.12 Newtons Third Law and Force Pairs Questions

Practise Edexcel IAL Physics 1.1.12 by testing force pairs across different bodies and applying action-reaction reasoning to real contexts.

Syllabus
Pearson Edexcel International Advanced Subsidiary/Advanced Level
Course
Physics XPH11/YPH11
Level
AS

Exam points

  • identify third-law pairs by equal magnitude, opposite direction, same type and different bodies
  • explain why weight and normal contact or magnetic forces do not form a third-law pair
  • apply action-reaction reasoning to jumps, pumps, rockets, helicopters or collisions

Edexcel A-Level Physics AS 1.3.12 Newtons Third Law and Force Pairs Questions question 1

[Maximum number: 2]

A steel object is held by an electromagnet. The magnetic force prevents the steel object falling.

State two reasons why the weight of the object and the force from the electromagnet are not a Newton third law pair.
(2)

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