Exam-style question
Try this first
What is the formula for rotational kinetic energy?.
- A.Ek = 0.5 x I x ω^2
- B.Ek = I x ω
- C.Ek = 0.5 x m x v^2
- D.Ek = m x g x h
Model answer
What a good answer should say
- Ek = 0.5 x I x ω^2
Explanation
Why this works
The correct formula for rotational kinetic energy is Ek = 0.5 x I x ω^2, where I is the moment of inertia and ω is the angular velocity. This formula shows how rotational kinetic energy depends on the distribution of mass and the speed of rotation.
Common mistake
No common mistake is linked to this question yet.