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The uniform plank of a see-saw is 8m long and is supported in the center. A boy weighing 50 kgf sits at a distance of 2.5 m from the fulcrum. Where must another boy weighing 40 kgf sit, so as to balance the plank? |
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Answer» The uniform plank of a see-saw is 8m long and is supported in the center. A boy weighing 50 kgf sits at a distance of 2.5 m from the fulcrum. Where must another boy weighing 40 kgf sit, so as to balance the plank? |
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