what is the free-body diagram of this figure?

Two forces are applied to a flywheel 50 cm in diameter. Each force is 500 N. The shaft is fixed to the wall using three grade 5 steel bolts. The distance between the bolts and the axis of rotation is 10 cm.    (a) What moment of resistance must develop the three bolts together    Answer: 250 Nm    (b) What is the resistance force F of each bolt?   Answer: 833.3 N    (c) What is the diameter of the bolts if their factor of safety is 10?    Answer: 4.14mm

Hello Sir,Good Morning. I'm sorry Sir the previous question is incompleteI'll re-attach the following. The following below is my question . Please advice. Thank you. Regards,Irfan

The first figure gives spring force Fx versus position x for the spring-block arrangement of the second figure. The scale is set by Fs = 190 N. We release the block at x = 13.0 cm. How much work does the spring do on the block when the block moves from x; = +9.0 cm to (a) x = +5.0 cm, (b) x = -5.0 cm, (c) x = -9.0 cm, and (d) x = -11.0 cm? -x (cm) -2 -1 -F, X* = 0 Block attached to spring F = 0 (a) x positive F, negative F (b) x negative F, positive (c)