Question

The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle. On wheel and axle A, the wheel and axle are very close in size. On wheel and axle B, the radius of the wheel is much greater than the radius of the axle.
Which wheel and axle has the greater mechanical advantage?

Answer 1

Answer:

Wheel and axle B

Explanation:

It is given that the mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle.

Mathematically, it can be written as :

$MA=\dfrac{r_w}{r_a}$.................(1)

On wheel and axle A, the wheel and axle are very close in size while on wheel and axle B, the radius of the wheel is much greater than the radius of the axle.

From equation (1) it is clear that the mechanical advantage is directly proportional to the radius of wheel.

So, the mechanical advantage of wheel and axle B is greater.

Answer 2

Wheal and axle B has greater mechanical advantage