Question

Simple machines make work easier. Most simple machines reduce the amount of effort force needed to move an object. This cart has a set of wheels. The wheels are actually simple machines: the wheel and axle. How can we change these wheels to decrease the amount of effort force needed to move the wagon?
A) Use a larger wheel and axle.
B) Make the radius of the axle larger in diameter.
C) Make the radius of the wheel larger in diameter.
D) Make the radius of the wheel smaller in diameter. ( D is incorrect. )

Answer 1

Sorry I skate and usually the smaller wheel rolls faster. Try C. then It's like longboard wheels they roll pretty fast.

Answer 2

Make the radius of the wheel and axle larger in diameter