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Question

# Mechanical advantage of wheel and axle is: (R= radius of the wheel, r = radius of the axle)R/rR+rr/RR−r

A
r/R
B
R+r
C
R/r
D
Rr
Solution
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#### Mechanical advantage is the amplification in force due to the use of a machine . The mechanical advantage of wheel and axle is given by M.A.=R/r

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