Movement of forces Flashcards
What is the SI unit of moment of a force?
Nm (Newton metre)
What is moment of a force?
The moment of a force is the product of the force and the perpendicular distance from the pivot to the line of action of the force.
Formula of moment of forces?
Moment (Nm) = Force (N) x Perpendicular distance from the pivot (m)
What is the direction of Moment of a Force?
Clockwise and anticlockwise. Moment of forces can be added up if they are in the same direction.
What are the factors affecting Moment of a Force?
- Magnitude of force applied
- the stronger the applied force, the stronger the moment of a force - Perpendicular distance of the applied force from the pivot
- the longer the distance of the applied force from the pivot, the stronger the moment of the force.
What is the principle of moments?
The principle of moments states that when a body is in equilibrium, the sum of clockwise moments about a pivot is equal to the sum of the anticlockwise moments about the same pivot.
Formula of principle of moments?
Sum of clockwise moments = Sum of anticlockwise moments