A student graphs the rotational kinetic energy of a rigid disk versus the square of…

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A student graphs the rotational kinetic energy

K_{\text{rot}}

of a rigid disk versus the square of its angular speed

\omega^2

. The data fall on a straight line through the origin. Which quantity is equal to the slope of this line? (a)

I

(b)

2I

(c)

\tfrac12 I

(d)

\dfrac{I}{4}