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In the figure, two blocks are connected over a pulley. The mass of block A is 6.

ID: 1322265 • Letter: I

Question

In the figure, two blocks are connected over a pulley. The mass of block A is 6.6 kg and the coefficient of kinetic friction between A and the incline is 0.13. Angle ? of the incline is 30. Block A slides down the incline at constant speed. What is the mass of block B?

fig06_34.gif In the figure, two blocks are connected over a pulley. The mass of block A is 6.6 kg and the coefficient of kinetic friction between A and the incline is 0.13. Angle ? of the incline is 30½. Block A slides down the incline at constant speed. What is the mass of block B?

Explanation / Answer

T = m*g*(sin - u*cos)

T = 6.6*g*(sin30 - 0.13*cos30)

T = 6.6*g*0.3874

m*g = 2.557*g

m = 2.557 kg

so mass of block B IS 2.557 kg

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