CAPE Physics Unit 1 · 2016 · Paper 1 · Question Q43
A 5\text{-kg} mass hangs from a uniform steel wire and the resulting stress in the wire is \sigma. Hanging a 10\text{-kg} mass from a steel wire of twice the diameter would result in a stress of
- (A)
\sigma/2 - (B)
\sigma - (C)
2\sigma - (D)
4\sigma
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