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Rotational kinetic energy is the energy of spinning objects. It depends on both moment of inertia and angular velocity, analogous to translational kinetic energy.
Công thức
The calculator applies KE_rot = ½ × I × ω²
- I
- I value — Variable used in the calculation
Hướng dẫn từng bước
- 1Enter the moment of inertia (I) and angular velocity (ω)
- 2The calculator applies KE_rot = ½ × I × ω²
- 3Results show rotational energy in joules
Ví dụ có lời giải
đầu vào
I = 2 kg·m², ω = 10 rad/s
Kết quả
KE_rot = 100 J
Compare to ½mv²
Lỗi thường gặp cần tránh
- ✕Using linear mass instead of moment of inertia in the formula
- ✕Forgetting to square the angular velocity
Câu hỏi thường gặp
How does moment of inertia relate to mass distribution?
Objects with mass concentrated far from the rotation axis have higher moment of inertia and require more energy to spin.
Can kinetic energy be converted between rotational and translational?
Yes, rolling objects convert between both types; the total kinetic energy is the sum of both components.
Sẵn sàng để tính toán? Dùng thử Máy tính Rotational K E miễn phí
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