Moments Flashcards

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1
Q

What is a moment?

A

force x perpendicular distance from the line of action of the force to the point

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2
Q

What is a pivot?

A

turning point of a force

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3
Q

What is a couple?

A

pairs of equal and opposite forces acting on a body, but not along the same line

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4
Q

moment of a couple?

A

force x perpendicular distance between the lines of action of the forces

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5
Q

unit of a moment?

A

Newton metre

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6
Q

principle of moments?

A

the sum of clockwise moments = sum of anticlockwise moments

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7
Q

central of mass?

A

point at which all mass is assumed to be co concentrated

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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

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