Assume pulleys are massless and frictionless, and that ropes are massless. FT3 FT2 FTI FT4 F a. What minimum force F is needed to lift the piano at a constant velocity with mass M using the pulley apparatus shown in the figure? b1. Determine the tension in each section of rope: FT1 b2. Determine the tension in each section of rope: FT2 b3. Determine the tension in each section of rope: FT3 b4. Determine the tension in each section of rope: Ft4 Mg/2 Mg/3

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!