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Calculate minimum required breaking force of a wire rope for a given reeving arrangement and a safety factor
Load to be lifted
$$ P_{load} = 3 \:
t $$
Number of rope falls
$$ n_{falls} = 1 \:
$$
Safety factor
$$ s_f = 5.6 \:
$$
Required breaking force
$$ F_{rope_{breq}} = {{( P_{load} \cdot g \cdot s_f ) \over \left({ n_{falls} \cdot \eta_{reeving} }\right)}} \:, kN $$