A. (R/r)²
B. r/R
C. (r/R)²
D. R/r
Correct Answer:
Option D – R/r
Explanation
In a wheel and axle system of mechanic, the mechanical advantage is given by its ratio of the radius of the wheel R, to the radius of the axle r. that M.A = R/r
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![In which of the following atoms is the ionic radius larger than the atomic radius? [11Na, 12Mg,13AI,17CI]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "In which of the following atoms is the ionic radius larger than the atomic radius? [11Na, 12Mg,13AI,17CI]")