I can't solve this problem, can u ? We have this crane hook which has a force F=3000dN pulling it down and we have to calculate a few designing elements look to the section and calculate the safety factors for: 1. the crane hook (part No. 5 )at the section A-A and B-B . 2. the hook trunion (part No. 6) at the section A-A and B-B . 3. the pulley pin (part No. 3)at the middle section . 4. the side plate (part No.1 ) the factor of safety on tension at the section A-A and on bearing pressure at the lower hole. This will help u: figure of the parts No. part's name 2 1 side plate 2 2 pulley 2 3 pulley pin 1 4 nut lock pin 1 5 crane hook 1 6 hook trunion 6 7 hex. nut M76 1 8 castle nut M76 2 9 washer 76 *10 2 10 pin 4*25 All the lengths r in mm. and please show me the all the steps that u made. THANK U FOR HELPING ME ANY WAY.