1.

9. A block of mass 250 g slides down an incline ofinclination 370 with a uniform speed. Find the work doneagainst the friction as the block slides through 1-0 m.18.

Answer»

Component of acceleration = g sin37 = 3g/5 = 6 m/s2Force = ma= 0.25 x 6= 1.5 N

work done= 1.5 x 1= 1.5 J



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