Masses M=100 kg, m₁=10 kg and m₂=20 kg are arranged as shown with smooth surfaces and ideal pulley/string. A force F makes m₂ move upward with acceleration 2 m s⁻². Take g=10 m s⁻². F is:
Physics · Newtons law of motion and Friction · constrain motion and newton second law in constrain motion
Masses M=100 kg, m₁=10 kg and m₂=20 kg are arranged as shown with smooth surfaces and ideal pulley/string. A force F makes m₂ move upward with acceleration 2 m s⁻². Take g=10 m s⁻². F is:

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