Figure below shows a mechanical force amplification mechanis

Figure below shows a mechanical force amplification mechanism (up to scale). Find out the reading on the weighing scale if a 10 pound force is applied as input. Figure below shows a mechanical force amplification mechanism (up to scale). Find out the reading on the weighing scale if a 10 pound force is applied as input.

Solution

I have solved most of this but I have been given the oppertunity to get extra credit if it\'s 100% correct so I would greatly appreciate some help to ensure I didn\'t veer away from the correct answers.