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# Thought Of The Day_6_Too Much Heat to Handle..!!

Note by Rohit Gupta
2 years, 7 months ago

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For the hanging steel ball, the centre of mass will shift downward when it expands due to heating

since the wire's length cant change in any way (positive or negative) , and hence the net energy supplied to it is

Q+mgh which must reflect as temperature change at the end (since its kinetic energy is 0 at all times , and the wire cannot do any work upon the ball since its length is fixed)

whereas on the one on the ground, the work done is Q-mgh which must reflect as temperature change at the end (once again, the grounds normal reaction cant do any work on it, but some amount of heat must be expended to raise the level of centre of mass)

so the hanging steel ball acquires greater temperature

i think so, am i right or close?

- 2 years, 7 months ago