In an ideal wheel an axle system, R stand for the radius of the wheel and r is the radius of the axle. the mechanical advantage is
A
(R/r)2
B
r/R
C
(r/R)2
D
R/r
Verified Correct Answer: D.
Physical Principles & Numerical Solution
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
Source: Myschool Past Questions Archive (Record #13677)