Moments Flashcards
1
Q
What is a moment?
A
force x perpendicular distance from the line of action of the force to the point
2
Q
What is a pivot?
A
turning point of a force
3
Q
What is a couple?
A
pairs of equal and opposite forces acting on a body, but not along the same line
4
Q
moment of a couple?
A
force x perpendicular distance between the lines of action of the forces
5
Q
unit of a moment?
A
Newton metre
6
Q
principle of moments?
A
the sum of clockwise moments = sum of anticlockwise moments
7
Q
central of mass?
A
point at which all mass is assumed to be co concentrated
8
Q
finding the centre of mass in unconventional object?
A
suspend the object on a string via a clamp stand
draw a pencil line along the plumb lines
centre of mass is point where the lines intersect
