Question

The formula for energy stored in the mechanical system of linear motion type is ______

(a) 1/2 Jwr^2

(b) 1/2 mv^2

(c) 1/2 mv

(d) Jwr^2

The question was posed to me in an online interview.

My question is from Principle of Energy Conversion in portion Magnetic Circuits of Electrical Machines

Answer 1

Correct answer is (b) 1/2 mv^2

For explanation: Energy stored is kinetic energy, since the system is of linear motion.