Neglecting the friction and weights of the pulley, which one of the following is the force F required to lift a 100 N load in the system of pulleys as shown in the figure?

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Q: 53 (SCRA/2009)
Neglecting the friction and weights of the pulley, which one of the following is the force F required to lift a 100 N load in the system of pulleys as shown in the figure?

question_subject: 

Logic/Reasoning

question_exam: 

SCRA

stats: 

0,0,3,0,2,1,0

keywords: 

{'pulley': [0, 0, 1, 2], 'pulleys': [0, 0, 1, 0], 'weights': [1, 2, 1, 3], 'friction': [0, 0, 1, 1], 'system': [8, 3, 7, 23], 'figure': [0, 1, 1, 0]}