This common misconceptions covers Common Misconceptions within Moments & Levers for GCSE Physics. Revise Moments & Levers in Forces for GCSE Physics with 13 exam-style questions and 10 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 9 of 14 in this topic. Use this common misconceptions to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 9 of 14
Practice
13 questions
Recall
10 flashcards
⚠️ Common Misconceptions
Misconception 1: "The distance in M = Fd can be any distance to the force"
The distance MUST be perpendicular to the line of action of the force. If the force is applied at an angle, you must use the perpendicular component of the distance (or the perpendicular component of the force). Many marks are lost by using a slanted distance rather than the perpendicular one.
Misconception 2: "A balanced seesaw has no forces on it"
A balanced seesaw has many forces — the weights of both people AND the reaction force at the pivot. "Balanced" means the resultant force is zero AND the net moment is zero. All three forces are present and real.
Misconception 3: "Using a longer lever creates more energy"
A longer lever allows you to lift a heavier load with less effort, but you must move the effort through a greater distance. Energy is conserved: work in = work out (ignoring friction). A lever is a force multiplier, not an energy creator.