The weight of the 3 lb roast purchased by the housewife is 1,360.78 grams.
The weight of an object is the force acting on the object due to gravity.
The weight of an object varies from place to place across the globe due to difference in acceleration due to gravity.
1 lb ------------> 453.592 grams
3 lb ------------> ?
= (3 x 453.592)
= 1,360.78 grams
Thus, the weight of the 3 lb roast purchased by the housewife is 1,360.78 grams.
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