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 the energy of a rotating object depends on its mass distribution and rotational speed.
Common mistake
No common mistake is linked to this question yet.