Answer:
Applied torque, T = 26.74 N-m
Given:
Mass of rod, M = 0.97 kg
Length of the rod, L = 97 cm = 0.97 m
Change in angular velocity, 
time, t = 0.20 s
Solution:
Now, we know that torque is given by:
(1)
where
I = moment of inertia of the rod
= angular acceleration
Using perpendicular axis formula to calculate the moment of inertia:
Now, the base ball bat will be held from one end, therefore, the moment of inertia about the axis at the end is given by:


Now, angular acceleration can be calculated as:
Now, calculation of torque using eqn (1):
