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... • Work of the weight is equal to product of weight W and vertical displacement y. • In the figure above, when is the work done by the weight positive? ...
                        	... • Work of the weight is equal to product of weight W and vertical displacement y. • In the figure above, when is the work done by the weight positive? ...
 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									 
									