Calculate the velocity ratio of a screw jack of pitch 0.2cm if the length of the tommy bar is 23cm? by Sunday | Jan 4 | Physics WAEC | 0 comments A. 230π B. 23π C. 70π D. 140π Correct Answer: Option A A. 230π Users Also Read These:A bar AB is balanced horizontally on two knife edges…Write short notes on: (i) Command line (ii) Status…Two spanners X and Y of lengths 15cm and 20cm…The handle of a screw jack is 35 cm long and pitch…The bar in Tennyson's "Crossing the Bar" is a symbol…