What is the moment of inertia of a pendulum with a mass of #8 kg# that is #9 m# from the pivot? Physics Rotational Motion Moment of Inertia 1 Answer ali ergin Feb 11, 2016 #I=8*81=648 kg*m^2# Explanation: #I=m*r^2# #I=8*9^2# #I=8*81=648 kg*m^2# Answer link Related questions Question #e35ee Why would anyone care about the moment of inertia of a planet? What is the moment of inertia of a 8 Kg and 10cm radius sphere about its center? A sphere is moving around in the air. If the moment of inertia is 10 Kg m2 and a radius of 1m.... What is the moment of inertia of a ball of a mass of 5 Kg and radius of 3 cm? Why is the moment of inertia important? How can I calculate the moment of inertia of a wheel? How is moment of inertia measured? How does the radius affect the moment of inertia? How does density affect the moment of inertia? See all questions in Moment of Inertia Impact of this question 1184 views around the world You can reuse this answer Creative Commons License