Question 103: Work, Energy and Power & Circular Motion

Question

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 :

Accepted Answer

$${	heta _1} = {1 \over 2}\alpha (2 	imes 1 - 1) = 5$$ rad
$$\Rightarrow$$ $$\alpha$$ = 10 rad/sec
2
So $${	heta _2} = {1 \over 2} 	imes \alpha (2 	imes 2 - 1) = 15$$ rad

Answer

7.5 rad

Answer

15 rad

Answer

20 rad

Answer

30 rad

Work, Energy and Power & Circular Motion

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 :

Choose the correct answer: