(Solved): The figure shows a gear driven power screw which is used to pull-up an eccentric load of \( 53 \ma ...

The figure shows a gear driven power screw which is used to pull-up an eccentric load of \( 53 \mathrm{kN} \). The screw is supported in bearings which take out the radial and thrust load components. The load is suspended from a nut as shown, guided to prevent rotation with the screw. The friction in the threads and between the nut and guide requires a torque of \( 450 \mathrm{Nm} \) to be applied to the gear to raise the load. a) Compute the stress components that act at \( A \) and \( B \). b) Find the principal stresses that act at \( A \). c) Sketch a stress element correctly oriented to show the maximum shear stress and the corresponding normal stress at \( \mathrm{A} \).