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OpenStudy (anonymous):
A scientist is using a pulley in a laboratory. If the resistance force is 40 Newtons and the effort force is 20 Newtons, what is the mechanical advantage? A. 1 B. 2 C. 3 D. 4 Not math but.. i would appreciate the help :D Wouldnt it be B?... I dont know how to even find the answer ^.^
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