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8 April, 13:05

Pertaining to simple machines and levers what changes when the fulcrum position is modified

Effort force only

Resistance force only

Weight

Effort and resistance force

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Answers (1)
  1. 8 April, 13:35
    0
    Simple machines makes our work easier. Lever is one of the simple machine which consists of rigid rod that is pivoted at a fixed support called as Fulcrum.

    There are three classes of lever.

    Class 1 : In this type of class, fulcrum is placed in between effort and load. Hence the movement of load is in reverse direction of the movement of effort. (fig 1)

    Class 2 : In this type of, the load is between the effort and the fulcrum. Hence, the movement of load is in same direction as that of the effort. (fig 2)

    Class 3 : In this type of lever the effort between the load and the fulcrum. Hence, both the effort and load are in same direction. (fig 3)

    Hence, when the position of fulcrum is modified the effort force changes.
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