Pitch of a 50 mm diameter threaded screw of a screw jack is 12.5 mm. The C.O.F. between the screw and nut is 0.13. Determine the torque required on the screw to raise a load of 27 kN assuming load to be rotating with screw. Determine the ratio of the torque required to raise to lower the load and also the efficiency of the machine.
Pitch of a 50 mm diameter threaded screw of a screw jack is 12.5 mm. The C.O.F. between the screw and nut is 0.13. Determine the torque required on the screw to raise a load of 27 kN assuming load to be rotating with screw. Determine the ratio of the torque required to raise to lower the load and also the efficiency of the machine.
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![Pitch of a 50 mm diameter threaded screw of a screw jack is
12.5 mm. The C.O.F. between the screw and nut is 0.13.
Determine the torque required on the screw to raise a load of
27 kN assuming load to be rotating with screw. Determine
the ratio of the torque required to raise to lower the load and
also the efficiency of the machine.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fee2c076a-e452-4941-a374-e33b19d20776%2Faca4afbd-5d0b-4a72-bff5-28f3c90d7550%2F1nhuc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Pitch of a 50 mm diameter threaded screw of a screw jack is
12.5 mm. The C.O.F. between the screw and nut is 0.13.
Determine the torque required on the screw to raise a load of
27 kN assuming load to be rotating with screw. Determine
the ratio of the torque required to raise to lower the load and
also the efficiency of the machine.
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