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The principle of virtual work can be applied to elastic system by considering the virtual work of
In each of the questions 20-21 , there are two quantities : Quantity A and Quantity B. You are to compare those quantities . Quantities A 5 (a-7) Quantity B 5a - 7
Quantity A = Time to travel 95 miles at 50 miles per hour ; and Quantity B = Time to travel 125 miles at 60 miles per hour .
r > s > 0 ; Quantity A = rs / r and Quantity B = rs / s