Answer to Question #168413 in Physics for Andu

Question #168413

7. In a disk with radius R = 30cm that is in equilibrium, two pairs of forces act, F1 = F2 = 10N and F3 = F4 = 15N. Find the arm of the pair of forces F3 F4

Expert's answer

"(F_1+F_2)(R)=(F_3+F_4)(r)\\\\(20)(30)=(30)(r)\\\\r=20\\ cm"

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