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Moments and levers

Seth-Riley Adams 8 preguntas

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Preguntas del test (8)

  1. 1The turning effect of a force is called the [blank_start]moment[blank_end] of the force.
    1. Amoment
  2. 2The [blank_start]moment[blank_end] of the force both depends on the size of the [blank_start]force[blank_end] and how far it is [blank_start]applied[blank_end] to the pivot or [blank_start]fulcrum[blank_end].
    1. Amoment
    2. Bforce
    3. Capplied
    4. Dfulcrum
  3. 3moment of force = [blank_start]force[blank_end] x [blank_start]perpendicular distance from fixed axis[blank_end]
    1. Aperpendicular distance from fixed axis
    2. Bforce
  4. 4The law of [blank_start]memoments[blank_end] (also called the law of the lever) is stated as follows:
    When a body is in equilibrium the [blank_start]sum[blank_end] of the clockwise moments about any [blank_start]point[blank_end] [blank_start]equals[blank_end] the sum of the [blank_start]anti-clockwise[blank_end] moments about the [blank_start]same[blank_end] point. There is no [blank_start]net[blank_end] moment on a body which is in equilibrium.
    1. Amoments
    2. Bsum
    3. Cpoint
    4. Dequals
    5. Esame
    6. Fanti-clockwise
    7. Gnet
  5. 5The unit for the moment of force is the [blank_start]newton metre[blank_end] ([blank_start]N m[blank_end]).
    1. Anewton metre
    2. BN m
  6. 6A [blank_start]level[blank_end] is any device which can turn about a [blank_start]pivot[blank_end]. In a working [blank_start]level[blank_end] a force called the [blank_start]effort[blank_end] is used to overcome a [blank_start]resisting[blank_end] force called the [blank_start]load[blank_end].
    1. Alever
    2. Bpivot
    3. Clever
    4. Deffort
    5. Eresisting
    6. Fload
  7. 7The conditions for equilibrium are:
    (i) The [blank_start]sum[blank_end] of the [blank_start]forces[blank_end] in one direction [blank_start]equals[blank_end] the sum of the forces in the [blank_start]opposite[blank_end] direction.
    (ii) The law of [blank_start]moments[blank_end] must apply.
    1. Asum
    2. Bforces
    3. Cequals
    4. Dopposite
    5. Emoments
  8. 8According the [blank_start]first[blank_end] condition for equilibrium, the [blank_start]reactions[blank_end] have to [blank_start]equal[blank_end] each other.
    1. Afirst
    2. Breactions
    3. Cequal

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A small quiz that highlights all the relevant facts and forumlas you need to know about moments and levers.
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