JEE Main 2025 Physics question
Two simple pendulums having lengths ℓ1 and ℓ2 with negligible string mass undergo angular displacements θ1 and θ2, from their mean positions, respectively. If the angular accelerations of both pendulums are same, then which expression is correct?
Answer: (4)
Solution
Angular acceleration ∝ θ/ℓ; equating for both pendulums gives θ1ℓ2 = θ2ℓ1