Answer to Question #150585 in Physics for olawumi abdulrahmon

Question

1.Two spanners X and Y of lengths 15cm and 20cm respectively are used in turn to give a screw of pitch 2mm on e complete rotation. If Rx and Ry are the respective velocity ratios of the spinners,what is the velocity ratio of Rx to Ry.
2. The velocity ratio and efficiency of a system of pulley are 6 and 80% respectively. How much effort is required to lift a load of mass 120kg with this system?

Answer 1

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