MHT CET Physics question
A metal wire has cross-sectional area 'A' and elastic limit 'E'. The maximum upward acceleration (a) is given to a mass 'm' of elevator supported by the cable of metal wire, so that stress does not exceed half the elastic limit. The mass of the elevator is (g = acceleration due to gravity) [MHT-CET 2020]
Answer: (B)
Solution
Tension is and the stress must not exceed : gives
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