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 Turning Effect of a Force Questions and Answers and Answers

The following diagram shows a long thin metal bar made of two parts connected at the ends with an insulating material. Side A is brightly polished while B is painted black. Two masses of equal weight are suspended on the ends. The bar is in equilibrium as shown in the diagram below. State and explain what will be observed on the equilibrium of the bar if it is placed outside on a hot day.

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Answer Text:
It will tip over to the right. The dull surface absorbs more radiant heat and expands more increasing moments on its side.