By increased force; larger distance from the pivot; greater if at 90° to the object
2 of 15
What is the formula for the moment of force?
Moment of a force (N m) = force (N) x perpendicular distance from pivot to force (m)
3 of 15
When is a beam in equilibrium?
When it is balanced
4 of 15
How can a beam be balanced?
The forces and the turning effects must be balanced
5 of 15
What happens if there is resultant force?
The object will move in its direction
6 of 15
And if there is resultant turning effect?
It will rotate in its direction
7 of 15
What are some examples of moment?
Opening a door, using a crowbar to lift a heavy rock, lifting a load in a wheelbarrow
8 of 15
What is the principle of moments?
The total clockwise moment = total anticlockwise moment
9 of 15
What is the centre of mass?
The point through which weight acts
10 of 15
Where is the centre of mass of a symmetrical object?
The point of symmetry
11 of 15
When an object is stable?
When weight and contact force are in line
12 of 15
What happens if the action of weight is beyond the edge of the base?
The object falls down
13 of 15
What are the most stable objects?
Those with a low centre of mass and a wide base
14 of 15
How to know the centre of mass of an irregular shape?
The lamina is suspended from a pin, so it hangs with its centre of mass where the plumb line is. 2 more lines are made, in which the centre of mass must lie on
15 of 15
Other cards in this set
Card 2
Front
How does it increase?
Back
By increased force; larger distance from the pivot; greater if at 90° to the object
Comments
No comments have yet been made