Homework Help: PHYSICS NEED HELP FAST

Posted by ricki on Wednesday, March 2, 2011 at 2:53pm.

A 150KG STEEL ROD IN A BUILDING UNDER CONSTRUCTION SUPPORTS A LOAD OF 6050KG. DURING THE DSY THE RODS TEMP. INCREASES FROM 22C TO 47C CAUSING THE ROD TO THERMAALLY EXPAND AND RAISE THE LOAD 5.5mm. FIND THE EGERHU TRANSFER AS HEAT TO OR FROM THE ROD. THE SPECIFIC HEAT CAPACITY OF STEEL IS THE SAME AS FOR IRON.
b. FIND THE WORK DONE IN THIS PROCESS. IS WORK DONE ON OR BY THE ROD?
c. HOW GREAT IS THE CHANGE IN THE RODS INTERNAL ENERGY? DOES THE RODS INTERNAL ENERGY INCREASE OR DECREASE?

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