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:

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: (A) 7.5 rad (B) 15 rad (C) 20 rad (D) 30 rad

Tardigrade Admin · Accepted Answer

5=(1/2) α(1)2 θ=(1/2) α(2)2 θ-5=15

Q. A fly wheel is accelerated uniformly from rest and rotates through $5 r a d$ 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

$5 = \frac{1}{2} α (1)^{2}$
$θ = \frac{1}{2} α (2)^{2}$
$θ - 5 = 15$

Q. A fly wheel is accelerated uniformly from rest and rotates through 5rad in the first second. The angle rotated by the fly wheel in the next second, will be: