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In Fig. 6-49, two blocks are connected ...

In Fig. 6-49, two blocks are connected over a pulley. The mass of block A is 15 kg, and the coefficient of kinetic friction between A and the incline is 0.20 Angle `theta` of the incline is `30^(@)`. Block A slides down the incline at constant speed. What is the mass of block B?

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`4.9 kg`
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