Question

Calculate the rotational kinetic energy of the object using the data: I=5 Kg-m^2, ω=25 rad/sec.

(a) 1.46 KJ

(b) 1.56 KJ

(c) 2.58 KJ

(d) 3.15 KJ

I have been asked this question during an interview.

I want to ask this question from Solid-State Switching Circuits in division Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right choice is (b) 1.56 KJ

Explanation: The Kinetic energy of the object having a moment of inertia=5 kg-m^2 rotating with an angular velocity equals to 25 rad/sec is .5×I×ω^2 = .5×5×25×25 = 1.56 KJ.