MHT CET 2025 Physics question
A small sphere oscillates simple harmonically in a watch glass whose radius of curvature is 1.6 m. The period of oscillation of the sphere is (acceleration due to gravity g = 10 m/s)
Answer: (D)
Solution
A small sphere moving to and fro in a concave watch glass behaves like a simple pendulum whose length equals the radius of curvature of the glass (the radius of the small sphere is neglected). Component of gravity along the surface $≈
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