Question

Suppose you are designing a cart for carrying goods downhill.To maximize the cart speed,should you design the wheels so that their moments of inertia about their rotation axes are large or small,or it does not matter?Explain assuming that the mechanical energy is conserved?

Answer 1

mgh=mV^2 /2 => that's how we can find maximum speed. it depends only on
gravity and height. So it does not depend on wheels