Moments and Turning Effects | GCSE Physics Practice
A moment is the turning effect of a force around a pivot.
Calculate the moment of a 50N force at 0.5m from the pivot.
What is Moments and Turning Effects | Practice?
"The turning effect of a force around a fixed point called a pivot."
What is the resultant force on an object if a 10N force acts right and a 4N force acts left?
Which of these is the correct vector equivalent of 'Distance'?
An object moves at a constant velocity. What is the resultant force?
What is the unit of the spring constant (k)?
Turning Effects
Moment (Nm) = Force (N) x Distance (m).
The distance MUST be the perpendicular distance from the pivot.
Principle of Moments: For equilibrium, total clockwise moments = total anticlockwise moments.
Levers allow a small force to lift a heavy load.
Units Matter: Moments are measured in Newton-metres (Nm). Not Joules, even though the units are similar to work done!
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