(Solved): Exercises 1. Sketch a free body diagram of each element in the Exercise 1- 1. Find forces in each ...

Exercises 1. Sketch a free body diagram of each element in the Exercise 1- 1. Find forces in each member and determine whether it is in tension or compression. If the material used was Mild/Low Carbon Steel 5mm bar for each element, find its best size. (Use yield strength 250Mpa) A 60000N A 60? Exercise 1-1 2. For Exercise 1-1; a) Find the size for safety factor of 2. b) Find the size if it uses solid round section. c) Find the size if it uses hollow round section with outer diameter 3.8cm. 3. Using a maximum allowable shear stress of 70Mpa, find the shaft diameter needed to transmit 40kW when a) the shaft speed is 2500 rev/min b) the shaft speed is 250 rev/min 4. Repeat Exercise 1-3 with an allowable shear stress of 140Mpa and a power of 37kW. 5. A hollow steel shaft is to transmit 4200Nm of torque and is to be sized so that the torsional stress does not exceed 120 MPa. Find thickness of the shaft should be used if 3inch diameter steel is used. B