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A machine whose pitch is 3.8cm is used to raise a load of mass 7599kg...

A machine whose pitch is 3.8cm is used to raise a load of mass 7599kg through a vertical distance of of 185mm. The length of the Tommy bar of the jack is 800mm.if the efficiency of the machine is 76.9%. calculate
I).mechanical Advantage
Il). effort required in raising the load
III).the velocity ratio
IV.)work done by the effort in raising the body( take g= 10m/s^2)?
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Asked by Annie on 20th August, 2020
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709