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Rotational KE
KE = ½Iω²
Where: I = moment of inertia (kg·m²) / current (A), KE = kinetic energy (J), ω = angular velocity (rad/s)
Solved example
Given: I = 7, omega = 5
Find: KE_ (kinetic energy (J))
- Formula: KE = I·ω²/2
- Substitute the values: KE = 5²·7/2
- Result: KE = 87.5 J
Answer: KE_ = 87.5 J
Calculator
How to calculate Rotational KE
- Write down the formula: KE = ½Iω².
- Note the known values (I, ω).
- Substitute them and simplify to find KE_.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Rotational KE?
The formula is KE = ½Iω², where I = moment of inertia (kg·m²) / current (A), KE = kinetic energy (J), ω = angular velocity (rad/s).
What is Rotational KE when I = 7, omega = 5?
KE_ = 87.5 J. Substitute the values into KE = ½Iω² and simplify.