The top pulleys of a weston differential pulley block have


The top pulleys of a Weston differential pulley block have diameters of 210 and 190 mm. Determine the effort required to raise a load of 150 kg if the efficiency of the system is 35%. What is the work done in overcoming friction when the load is raised through a height of 2.5 m?

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Mechanical Engineering: The top pulleys of a weston differential pulley block have
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