Two blocks of masses m and 2m are connected through a wire of breaking stress S passing over a frictionless pulley. The maximum radius of wire used so that the wire may not break is
A
√34mgπS
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B
√43mgS
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C
√43mgπS
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D
√12mgπS
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Solution
The correct option is C√43mgπS
Stress in the wire =TensionArea
to wire breaking, the stress should not exceed the breaking stress