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Entropy change as mass tends to infinity

  • Thread starter blueyellow
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'show that the entropy change of the object tends towards deltaQ/T (subcript i) as its mass tends to infinity, in the4 limit where it becomes a heat bath

i got:
change in entropy =mc ln (Tf/Ti) (mc ln (T subcript f/T subcript i))

but if the mass tends to inifinity the expression seems to blow up

thanks in advance
 

Answers and Replies

  • #2
Andrew Mason
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'show that the entropy change of the object tends towards deltaQ/T (subcript i) as its mass tends to infinity, in the4 limit where it becomes a heat bath

i got:
change in entropy =mc ln (Tf/Ti) (mc ln (T subcript f/T subcript i))

but if the mass tends to inifinity the expression seems to blow up

thanks in advance
As the mass increases what happens to Tf/Ti?

Let Tf = Ti + dT where Ti is very close to Tf.

Express the change in entropy in terms of Ti and dT.

AM
 

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