Asked by Odukoya

A load of 30N is raised 2m when an effort of 10N moves 8m calculate the velocity ratio and efficiency of a machine
Answered by Damon
work output = 30*2 = 60 Joules
work input effort = 10*8 = 80 Joules
well the time is the same so the velocity out is 2/8 = 1/4 the velocity in
eff = 100 * work out/work in = 100(6/8) = 75%
Answered by chioma
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