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Junior Cycle · Junior Cycle Engineering

Junior Cycle Engineering: Levers, cams, cranks & springs

How often Levers, cams, cranks & springs comes up on the Engineering papers, every year it was asked, and questions to try.

CL Asked on 3 of the last 5 Common Level papers, most recently in 2025. most years

Levers, cams, cranks & springs, Common Level(7 marks)

Quick ones on Levers, cams, cranks & springs.

(a)In a lever, what is the fulcrum?
  1. The force you put into the lever
  2. The pivot the lever turns about
  3. The load the lever is moving
(b)What does a cam and follower do?
  1. Joins two shafts that meet at 90 degrees
  2. Turns up-and-down movement into rotation
  3. Turns rotation into up-and-down movement
(c)What does a ratchet and pawl allow?
  1. Rotation in one direction only
  2. Free rotation in both directions
  3. Rotation at two different speeds
Show the answers

(a) The pivot the lever turns about

(b) Turns rotation into up-and-down movement

(c) Rotation in one direction only

Your turn: Common Level questions on Levers, cams, cranks & springs.

Common Level

Asked on 3 of the last 5 Common Level papers, most recently in 2025. most years

Every paper, year by year

YearWhere it came up
2026Not asked
2025Q2c
2024Q3b
2023Q1c, Q1e
2022Not asked

Links open the State Examinations Commission’s paper for that year.

More Levers, cams, cranks & springs questions

Levers, cams, cranks & springs, 2 marks

What is a compression spring designed to do?

  1. Pull back when it is stretched
  2. Turn back when it is twisted
  3. Push back when it is squashed
Show the answer

Push back when it is squashed

A compression spring has gaps between its coils and pushes back when squashed, as in a pen or a mattress. A tension spring is closely wound and pulls back when stretched.

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