Physics
Mechanics
Easy
Question
A triangular plate of uniform thickness and density is made to rotate about an axis perpendicular to the plane of the paper and (i) passing through A, (ii) passing through B, by the application of some force F at C as shown in the figure. In which case angular acceleration is more ?
- In cas (i)
- In case (ii)
- Both (i) and (ii)
- None of these
The correct answer is: In case (ii)
we can see that torque in both cases is FL/2. But in case (ii) moment of inertia is less. So angular acceleration is more in case (ii)
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