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Unformatted text preview: A system oF two wheels fxed to each other is Free to rotate about a Frictionless axis through the common center oF the wheels and per-pendicular to the page. our Forces are ex-erted tangentially to the rims oF the wheels, as shown below. F 2 F F F 2 R 3 What is the magnitude oF the net torque on the system about the axis? 1. = 0 2. = F R 3. = 14 F R 4. = 2 F R correct 5. = 5 F R Explanation: The three Forces F apply counter-clockwise torques while the other Force 2 F applies a clockwise torque, so = s F i R i Version 018/AABAC QTest #8 Antoniewicz (57420) 2 = (-2 F ) (3 R ) + F (3 R ) + F (3 R ) + F (2 R ) = 2 F R ....
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