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hey, I'm currently going through a mechanics course on edx.org . And part of last's week homework was this problem. well okay I don't know how to add images so I'm gonna try my best to describe it.
There is a platform has a mass of 200kg. From that platform a rope hangs( with tension T_{A} with a mass of 70kg at the end of it ( say a human ). Then from that mass ( human ) another rope holds another mass 90kg. it says it in the problem that g = 10 m/s^2 and the acceleration of the whole thing is 2 m/s^2 .Also the ropes are ideal ropes so have no mass.
What is the tension Ta ( of the first rope ) ?
here's the question copied " Man A (70kg) and Man B (90kg) are hanging motionless from a platform (200kg) at rest. What is the tension, T_{A}, in the top rope if the platform accelerates upward at a constant rate of 2 m/s2? Assume the ropes are massless and use g = 10 m/s2. "
hope I made it clear . So after I submitted my answer ( forgot what it was now ) It showed me the correct answer which is 1920 N. I could just accept it and move on. But I'll rather learn the physics behind it. And it's a problem I'm struggling with so I'll help me develop my understanding of physics.
Okay so I have no idea on how to approach it. I tried so many ways but I never get the answer they get. So if you could , please explain the solution for me :)
There is a platform has a mass of 200kg. From that platform a rope hangs( with tension T_{A} with a mass of 70kg at the end of it ( say a human ). Then from that mass ( human ) another rope holds another mass 90kg. it says it in the problem that g = 10 m/s^2 and the acceleration of the whole thing is 2 m/s^2 .Also the ropes are ideal ropes so have no mass.
What is the tension Ta ( of the first rope ) ?
here's the question copied " Man A (70kg) and Man B (90kg) are hanging motionless from a platform (200kg) at rest. What is the tension, T_{A}, in the top rope if the platform accelerates upward at a constant rate of 2 m/s2? Assume the ropes are massless and use g = 10 m/s2. "
hope I made it clear . So after I submitted my answer ( forgot what it was now ) It showed me the correct answer which is 1920 N. I could just accept it and move on. But I'll rather learn the physics behind it. And it's a problem I'm struggling with so I'll help me develop my understanding of physics.
Okay so I have no idea on how to approach it. I tried so many ways but I never get the answer they get. So if you could , please explain the solution for me :)
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