In the previous question, the smallest kinetic energy at the bottom of the incline will be achieved by ___________ .

Question

KollegeApply · Accepted Answer

the hollow sphere Torque is same for all the bodies; therefore, the angular momentum will be conserved. Now, total kinetic energy = $\frac{1}{2}$m v^2 + L^$\frac{2}{2}$I So, the body with greater value of moment of inertia will have smallest kinetic energy at the bottom of the incline. Order of the moment of inertia of the bodies:- hollow sphere > disc > solid sphere Hence, the hollow sphere will have the smallest kinetic energy at the bottom.

AChoose Your Answer