A child of mass 10 kg sits on the one end of a see-saw, a plank of mass 50 kg and length 5 m is pivoted in the middle. W

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A child of mass 10 kg sits on the one end of a see-saw, a plank of mass 50 kg and length 5 m is pivoted in the middle. W

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A child of mass 10 kg sits on the one end of a see-saw, a plankof mass 50 kg and length 5 m is pivoted in the middle. Where shouldanother child of mass 15 kg sit for the system to be in rotationalequilibrium? a. 2.5 m b. 1.36 m c. 1.76 m d. 1.67 m
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