Physics
JAMB 2015
What is the relationship mechanical advantage (MA) velocity Ratio (V.R) and efficiency with percentage?
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A.
e = M.A/V.R × 100 %
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B.
M.A = E.V.R
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C.
V.R = 1 ÷ sin θ M.A
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D.
M.A = 1/E × 100%
Correct Answer: Option A
Explanation
he relationship between M.A, V.R, e and 100% can be written as
e = M.A/V.R × 100 %
i.e E/100 = M.A/V.R
= L ÷ E/x ÷ y = Ly/Ex
E/100 = Ly/Ex
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