%3Cp%3EYou%20are%20given%20a%20pendulum%20composed%20of%20a%20%3Cspan%20class%3D

Question

%3Cp%3EYou%20are%20given%20a%20pendulum%20composed%20of%20a%20%3Cspan%20class%3D%22nobr%22%3E0.023%0Akg%3C%2Fspan%3E%20mass%20on%20the%20end%20of%20a%20%3Cspan%20class%3D%22nobr%22%3E0.42%20m%3C%2Fspan%3E%0Along%20massless%20string.%20The%20pendulum%20is%20moved%2025%3Cspan%20class%3D%0A%22c1%22%3E%C2%B0%3C%2Fspan%3E%20from%20the%20vertical%20and%20released.%20Find%20the%20tension%20in%0Athe%20string%20when%20the%20mass%20is%20at%20the%20release%20point%2C%3C%2Fp%3E%0A%3Cdiv%20class%3D%22watexline%22%3E%3Cspan%20class%3D%22watexinlineblock%22%3E%3Cspan%20class%3D%0A%22c2%22%3E%3F%3C%2Fspan%3E%20%3D%20%3Cspan%20class%3D%22c3%22%3E25%3C%2Fspan%3E%3Cspan%20class%3D%0A%22c1%22%3E%C2%B0%3C%2Fspan%3E.%3C%2Fspan%3E%3C%2Fdiv%3E%0A

Explanation / Answer

T cos 25 = Mg

therefore, T = .023*9.8/cos 25 = .22N

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