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Anonymous at Wed, 17 Jul 2024 23:50:33 UTC No. 16285754
How do I calculate how much force it's needed to lift the lever on the right side if there's no loads but the bar itself weighs like 80 kilos?
Anonymous at Thu, 18 Jul 2024 01:06:51 UTC No. 16285842
>>16285754
(1/2)*(l_1/L-l_2/L)*80*10 newtons, where l_1 is distance from support to right end, l_2 is distance from support to left end and L is length of the bar
Anonymous at Thu, 18 Jul 2024 02:43:43 UTC No. 16285938
Cut the bar from the support point. The force on the right end must now be half of the force that would be created by the mass of the bar. Calculate that force. Now glue the missing piece back. Locate the center of mass of the missing piece and calculate how much torque it creates when it's glued back. Subtract that torque from the previous result and that's the final answer.