Exam-style question
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If the moment of inertia of a rotating object is halved, what will happen to its angular speed if the applied torque remains unchanged?.
- A.Angular speed will double
- B.Angular speed will halve
- C.Angular speed will remain the same
- D.Angular speed will become zero
Model answer
What a good answer should say
- Angular speed will double
Explanation
Why this works
Using the equation τ = I * α, if I is halved and τ remains constant, α must double. This results in an increase in angular speed.
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