JEE Main 2026 Physics question
A wheel initially at rest is subjected to a uniform angular acceleration about its axis. In the first 2 s it rotates through an angle θ₁ and in the next 2 s it rotates through an angle θ₂. The ratio θ₂/θ₁ is .
Answer: (B)
Solution
θ(t)=½αt². θ₁=½α(4)=2α. θ(4)=½α(16)=8α, so θ₂=8α−2α=6α. Ratio=6α/2α=3.