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A block of mass 1 kg is pushed up a surface inclined to the horizontal at an angle of 30° by a force of 10 N parallel to the inclined surface (Fig. 6.15). The coefficient of friction between the block and the incline is 0.1. If the block is pushed up by 10 m along the incline, what is the work done against the force of friction?
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8.66 J
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8.66 J
8.66 J
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