Movement of forces Flashcards

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1
Q

What is the SI unit of moment of a force?

A

Nm (Newton metre)

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2
Q

What is moment of a force?

A

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.

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3
Q

Formula of moment of forces?

A

Moment (Nm) = Force (N) x Perpendicular distance from the pivot (m)

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4
Q

What is the direction of Moment of a Force?

A

Clockwise and anticlockwise. Moment of forces can be added up if they are in the same direction.

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5
Q

What are the factors affecting Moment of a Force?

A
  1. Magnitude of force applied
    - the stronger the applied force, the stronger the moment of a force
  2. 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.
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6
Q

What is the principle of moments?

A

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.

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7
Q

Formula of principle of moments?

A

Sum of clockwise moments = Sum of anticlockwise moments

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