Question 2 Not yet answered A square-thread power screw has d = 45 mm, d, -42, a pitch of 6 mm with double threads, fof 0.05, de 60 mm, lead 12 mm, and F 12 kN per screw. Determine the following (a) Find the torque required to raise and lower the load. (b) Find the efficiency during lifting the load. Marked out of 13.00 Flag question (c) Find the body stresses, torsional and compressive. (d) Find the bearing stress. (1) Find the thread bending stress at the root of the thread. da p/2 p/2