A truck has a wheel that has a radius of 60 cm. The axle that powers the wheel has a radius of 10 cm. What is the mechanical advantage of the truck wheel?

a
4
b
1/6
c
1/4
d
6

The mechanical advantage of a wheel and axle system is calculated as the ratio of the radius of the wheel to the radius of the axle.

In this case, the mechanical advantage of the truck wheel is:

60 cm (radius of wheel) / 10 cm (radius of axle) = 6

Therefore, the answer is (d) 6.