6 21 4 M M 2 4M M A man of mass m stands on a platform of

Last updated: 6/4/2023

6 21 4 M M 2 4M M A man of mass m stands on a platform of equal mass m and pulls himself by two ropes passing over pulleys as shown If he pulls each rope with a force equal to half his weight his upward acceleration would be downward 1 1 g 2 4M M 2 g 4 M 4M 3 g 4 zero