The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the Jack is 75/π %, calculate the mechanical advantage. By: Sunday|Published on: Jan 3|Categories: Physics WAEC| 0 comments A. 400 B. 300 C. 200 D. 150 Correct Answer: Option C C. 200 Users Also Read These:A uniform bar AB is balanced on a knife-edge which…What is the relationship mechanical advantage (MA)…A screw-jack has the distance between its successive…What effort will a machine of efficiency 90% apply…Calculate the light of the image formed by a pinhole…SEE ALSO The diagram above represents the stress-strain graph of a landed wire. Which of these statements is correct?