A man wishes to lift a stone weighing 1440 N, using a first-class lever that measures 5 meters. What force should it perform if the fulcrum

Question

A man wishes to lift a stone weighing 1440 N, using a first-class lever that measures 5 meters. What force should it perform if the fulcrum is 150 cm from the stone. *

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Khoii Minh 4 years 2021-08-12T22:51:57+00:00 1 Answers 14 views 0

Answers ( )

  1. Thunguyet
    0
    2021-08-12T22:53:38+00:00
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    Answer:

    3360 N

    Explanation:

    In a first-class lever, the effort force and load force are on opposite sides of the fulcrum.

    The lever is 5 m long.  The load force is 1.50 m from the fulcrum, so the effort force must be 3.50 m from the fulcrum.

    The torques are equal:

    Fr = Fr

    (1440 N) (3.5 m) = F (1.5 m)

    F = 3360 N

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