Register
A disc of moment of inertia 45kgm^2 is rotating with an angular velocity of 12rad/s.what will be its rotational kinetic energy?​
160k views
4 votes
A disc of moment of inertia 45kgm^2 is rotating with an angular velocity of 12rad/s.what will be its rotational kinetic energy?​

User Ofeargall
by
3.2k points

1 Answer

4 votes

Answer:

3240 J

Step-by-step explanation:

here moment of inertia (I)= 45kgm²

angular velocity (ω) = 12 rad/s

now KE = 1/2(Iω²)=1/2(45×12²)= 3240J

User Lafayette
by
4.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.6m questions

4.5m answers

Other Questions

What is the application of physics ​
A car is moving 14.4 m/s when it hits the brakes. It slow from 78.8 m, which take 9.92s. It then accelerates at 1.83 m/s 2 for 4.50 s. What is the total displacement?
A body of mass 10 kg moving on a circular path of radius 1 m completes a rotation in 2 pi sec the centripetal acceleration is A 1m/s 2 B 2m/s 2 C 4m/s 2 D none
A 0.260 kg potato is tied to a string with length 2.50 m, and the other end of the string is tied to a rigid support. The potato is held straight out horizontally from the point of support, with the string
What atom accounts for 91% of all the sun's atoms
Link Copied!