What is velocity ratio? It is impossible to get a perfect machine in practical life, why?
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The 20@kg wheel has a radius of gyration about its center g of kg = 300 mm. when it is subjected to a couple moment of m = 50 n # m, it rolls without slipping. determine the angular velocity of the wheel after its mass center g has traveled through a distance of sg = 20 m, starting from rest.

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

What is the relationship between the direction of motion of the balloon and the wind currents