A driller is pulling on a stuck drillstring. The derrick si capable of supporting a m a x i m u m equivalent derrick load of 500,000 Ibf, the drilling line has a strength of 51,200 Ibf, and the strength of the drillpipe in tension is 396,000 Ibf. fI eight lines are strung between the crown block and traveling blockandsafety factors of 20. are required for the derrick, drillpipe, and drilling line.

Draw a schematic including values and units of parameters involved