1
Moment of force = Force × Perpendicular distance from pivot
2
Sum of clockwise moments = Sum of anticlockwise moments
3
Moment of couple = F × d
FORMULA CHAPTER
Chapter 01 – Force
ICSEClass 10Physics3 formulas
Complete ICSE Class 10 Chapter 01 Force formulas covering moments, torque, equilibrium and centre of gravity for Board exam preparation.
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Moment of a Force
Moment of force = Force × Perpendicular distance from pivot
Worked example
A 20 N force acts 0.5 m from a pivot: moment = 10 N m.
Principle of Moments
Sum of clockwise moments = Sum of anticlockwise moments
Worked example
10 N at 0.4 m balances 20 N at 0.2 m because both moments are 4 N m.
Moment of a Couple
Moment of couple = F × d
SymbolMeaningUnit
FEither forceN
dCouple armm
Worked example
Given: F = 10 N, d = 0.4 m Calculation: Moment = 10 × 0.4 Answer: 4 N m