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## Homework Statement

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

Counterweight: P

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)

## Homework Equations

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...