Four movable pullers are arranged in first system.The weight of each pulley is 5 N. The effort which can lift a load of 10 kN is approximately

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Q: 24 (SCRA/2010)
Four movable pullers are arranged in first system.The weight of each pulley is 5 N. The effort which can lift a load of 10 kN is approximately

question_subject: 

Geography

question_exam: 

SCRA

stats: 

0,1,1,1,0,1,0

keywords: 

{'movable pullers': [0, 0, 1, 0], 'pulley': [0, 0, 1, 2], 'weight': [0, 0, 1, 1], 'load': [0, 0, 2, 0], 'kn': [0, 0, 1, 0], 'first system': [0, 0, 1, 1]}