JEE MAIN - Physics (2022 - 24th June Evening Shift - No. 12)
A fly wheel is accelerated uniformly from rest and rotates through 5 rad in the first second. The angle rotated by the fly wheel in the next second, will be :
7.5 rad
15 rad
20 rad
30 rad
Explanation
$${\theta _1} = {1 \over 2}\alpha (2 \times 1 - 1) = 5$$ rad
$$\Rightarrow$$ $$\alpha$$ = 10 rad/sec2
So $${\theta _2} = {1 \over 2} \times \alpha (2 \times 2 - 1) = 15$$ rad
Comments (0)
