Question

A pencil sharpener has a handle with a radius of 1.5 cm. The sharpening mechanism has a radius of 0.5 cm. What is the IMA of the pencil sharpener?
A-0.33
B-0.5
C-3
D-5

Answer 1

Answer: The correct answer is option C.

Explanation:

IMA (Ideal Mechanical advantage) is defined as ratio of input distance to the output distance.

$IMA=\frac{D_I}{D_O}$

Radius of the handle of the sharper = $D_I$ =1.5 m

Radius of the sharping mechanism = $D_O$ =0.5 m

$I.M.A=\frac{D_I}{D_O}=\frac{1.5 cm}{0.5 cm}=3$

3 is the IMA of the pencil sharpener. Hence, option C is correct.

Answer 2

The answer is A I believe