Question

1. A large turbine has an initial angular momentum of 6700 kgm^2/s. A storm is rolling in and the wind picks up. 8 seconds later the angular momentum of the turbine is 8800 kgm^2/s. What is the torque acting on the turbine

Answer 1

Answer:

262.5 Nm

Explanation:

Torque is the rate of change of angular momentum.

Hence, we have

$\tau = \dfrac{\Delta L}{t}$

ΔL is the change in angular momentum.

Using values in the question,

$\tau = \dfrac{8800-6700 \text{ kg m}^2\text{/s}}{8\text{ s}} = 262.5 \text{ Nm}$