Hello, this problem is cracking my mind for days, and I haven't solved it yet :(
Crane dimensions: See image
Mass of the crane: 10Tons
Mass center: G
Maximum Load: 4Tons
Weight of the counterweight: ?
"A" says: when you have a maximum load (4Tons) at the farest left side, the minimum weight of P that lets work crane well without falling to the left. (Answer: 6.93Tons)
"B" says: without any load, the maximum weight of the counterweight that lets work crane well without falling to the right. (Answer: 26.67Tons)
The resultant force will be cero, and the resultant torque too.
The Attempt at a Solution
Tried to calculate the torques to find the mass of the counterweight but I didn't find the correct answer.
I tried to use the angle of the left arm with the crane axis to make a tension T, but nothing.
The answer will probably be easy, but I can't see it now...