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A screw jack whose pitch is 4.4m is used to a raise a body of...

A screw jack whose pitch is 4.4m is used to a raise a body of mass 80kg through a height of 20cm. the length of the tommy bar of the jack is 70cm if the efficiency of the jack is 80%, calculate a.the velocity ratio of the jack. b.the mechanical advantage of the jack. c. the effort required in raising the body. d. the work done by effort in raising the body.(take g=10m/s², π 22/7?
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Asked by Nwankwo on 9th July, 2022
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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 May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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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 May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts