The flywheel of a stationary engine has a moment of inertia of 60kgm^2. What is the kinetic energy if its angular acceleration is 2 rads^-2

The kinetic energy of  flywheel of a stationary engine is 120J.

Explanation:

Key Terms:

torque: A rotational or twisting effect of a force; (SI unit newton-meter or N m; imperial unit foot-pound or ft-lb)inertia: The property of a body that resists any change to its uniform motion; equivalent to its mass.angular velocity: A vector quantity describing an object in circular motion; its magnitude is equal to the speed of the particle and the direction is perpendicular to the plane of its circular motion.

Here , angular acceleration = 2

Angular velocity w =  Angular acceleration × time

∵ Acceleration is 2 rad per second sq. So , time is 1 sec.

⇒ Angular velocity (w) =

⇒ Angular velocity (w) =

Now, kinetic energy ⇒

⇒

⇒

⇒

∴ The kinetic energy of  flywheel of a stationary engine is 120J.

A) acceleration. this seems to be the one that makes sense.

Answer59.2kg; /