Question

if a sphere is rolling then the ratio of it's rotational kinetic energy to total kinetic energy is​

Answer 1

Answer:

rotational over kinetic

moment of inertia I=2/5mr^2

therefore the ratio is 2:5

or 2/5

hope it helps yrr

Answer 2

Answer:

The ratio of translational energy to rotational kinetic energy is only 0.380. This ratio tells us that most of the kinetic energy of the helicopter is in its spinning blades—something you probably would not suspect.