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AQA GCSE · Question 09.5 · Forces
There are some toy gears on the front of the baby walker. The child applies a force to gear A. This causes a moment about the pivot, so gear A rotates.
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Use the Physics Equations Sheet to answer questions 09.5 and 09.6.
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Write down the equation which links distance (d), force (F) and moment of a force (M).
There are some toy gears on the front of the baby walker. The child applies a force to gear A. This causes a moment about the pivot, so gear A rotates.
<br><br>
Use the Physics Equations Sheet to answer questions 09.5 and 09.6.
<br><br>
Write down the equation which links distance (d), force (F) and moment of a force (M).
How to approach this question
Locate the relevant equation on the Physics Equations Sheet. It involves the quantities moment (M), force (F), and distance (d). Write the equation using the correct symbols.
Full Answer
M = Fd
The equation for the moment of a force is given on the Physics Equations Sheet as:
M = Fd
where:
M is the moment in Newton-metres (Nm)
F is the force in Newtons (N)
d is the perpendicular distance from the pivot to the line of action of the force in metres (m)
Common mistakes
✗ Writing the equation with the symbols rearranged incorrectly (e.g., F = Md).\n✗ Using words instead of the standard symbols.
Practice the full AQA GCSE Physics Foundation Tier Paper 2
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