Question

34. A mass of 2kg connected at the end of a string rotating in circ
of radius 5cm with an angular velocity of 5 rad/sec is brought 38.
rest after 5sec. How much torque is applied on it?
A. 0.9 N-m
B. 1.2 N-
Imre
C. 2.3 N-1
D. 0.5 N-m
E. 0.005 N-m
Jefx8.
2X0.05
of a disk of mass "m" and radius 1m abou​

Answer 1

Answer:

Rotational energy also known as angular kinetic energy is defined as: The kinetic energy due to the rotation of an object and is part of its total kinetic energy. Rotational kinetic energy is directly proportional to the rotational inertia and the square of the magnitude of the angular velocity.