moments

    Cards (23)

    • What is the moment of a force?
      The turning effect produced by a force
    • What are some examples of the rotation caused by the moment of a force?
      Child on a see-saw, door opening
    • What is a fixed pivot?
      A point around which an object rotates
    • How can rotation be classified?
      Clockwise or anticlockwise
    • How can you determine the direction of rotation using a clock?
      By observing the hands of the clock
    • What happens when a force is applied on one side of a pivot?
      It causes the object to rotate
    • What is the formula for calculating the moment of a force?
      M = F × d
    • What does each variable in the moment formula represent?
      M = moment, F = force, d = distance
    • What is the significance of the forces being perpendicular to the distance from the pivot?
      It maximizes the moment produced
    • Why is it harder to push a door open near the hinges?
      It requires more force due to distance
    • How does increasing the distance from the pivot affect the force required?
      It decreases the force required
    • In what units is the moment of a force measured?
      Newton metres (Nm)
    • What does the principle of moments state?
      Total clockwise moment equals total anticlockwise moment
    • How can you determine if an object is balanced?
      By checking if moments on both sides are equal
    • What happens when a beam moves clockwise about a pivot?
      The applied force is considered clockwise
    • How do you calculate the total clockwise moments?
      Sum of all clockwise forces multiplied by distances
    • What is the equation for balancing moments on a beam?
      Sum of clockwise moments = Sum of anticlockwise moments
    • How do you find the distance a child must sit from a pivot on a see-saw?
      By using the principle of moments
    • What is the centre of gravity of an object?
      The point through which the weight acts
    • Where is the centre of gravity located in a symmetrical object?
      At the point of symmetry
    • How can you find the centre of gravity of an irregular object?
      By suspending it and using a plumb line
    • What happens to the centre of gravity when a body changes shape?
      It shifts depending on the shape
    • How should you draw force diagrams regarding the centre of gravity?
      Draw weight force acting from the centre of gravity
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