An initially installed flywheel can store 10⁶ J of kinetic energy when rotating at 300 rad/s.It is replaced by another flywheel of the same size but made of a stronger material.If its mass is the same as that of the original,and it is now capable of achieving a rotational speed of 395 rad/s,what maximum energy can be stored? A) 1.73E+6 J B) 1.92E+3 J C) 1.16E+5 J D) 1.00E+6 J

Question

Quizplus · Accepted Answer

Kinetic energy is proportional to the square of angular velocity. So, the new maximum energy stored is:$$E = (395/300)^2 * 10^6 J = 1.73 * 10^6 J$$

An Initially Installed Flywheel Can Store 106 J of Kinetic

An Initially Installed Flywheel Can Store 10⁶ J of Kinetic