Thermal Physics> Temperature...

A steel rod of diameter 1 cm is clamped firmly at each end when its temperature is 25 degrees celcius so that it cannot contract on cooling. The tension in the rod at 0 degrees celcius is

a) 4000 N

b) 7000 N

c) 7400 N

d) 4700 N

Madhumita S Srodharan , 14 Years ago

Grade 12

1 Answers

Jaya IITK

answer:

change in length if it was not clamped(l')=l*alpha of steel* change of temp.

young's modulus of steel=tension/area*(l'/l)

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Last Activity: 14 Years ago

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Thermal Physics> Temperature...

A steel rod of diameter 1 cm is clamped firmly at each end when its temperature is 25 degrees celcius so that it cannot contract on cooling. The tension in the rod at 0 degrees celcius is a) 4000 N b) 7000 N c) 7400 N d) 4700 N

Madhumita S Srodharan , 14 Years ago

Jaya IITK

LIVE ONLINE CLASSES

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A steel rod of diameter 1 cm is clamped firmly at each end when its temperature is 25 degrees celcius so that it cannot contract on cooling. The tension in the rod at 0 degrees celcius is

a) 4000 N

b) 7000 N

c) 7400 N

d) 4700 N