**Question:** A fly wheel rotates about a fixed axis and slows down from 300 rpm to 100 rpm in 2 min. Then its angular retardation in rad/min 2 is

(A) 100/ 𝜋

(B) 100

(C) 100 𝜋

(D) 200 𝜋

**Answer:** option (D)

**Solution:**

with
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**Question:** A fly wheel rotates about a fixed axis and slows down from 300 rpm to 100 rpm in 2 min. Then its angular retardation in rad/min 2 is

(A) 100/ 𝜋

(B) 100

(C) 100 𝜋

(D) 200 𝜋

**Answer:** option (D)

**Solution:**