How to Calculate Work Required to Stop a Rolling Hoop?
KE = 0.5 * 150 kg * (0.130 m/s)^2
KE = 0.5 * 150 * 0.0169
KE = 1.3495 J
Therefore, the amount of work that must be done on the hoop to stop it is 1.3495 Joules.
It is important to note that the work needed to stop the hoop is equal to the kinetic energy it possesses due to its motion. This energy must be dissipated in some form, such as through friction or another means of stopping the hoop's movement.