Calculate torque required to overcome thread friction if axial load of 8 kN acts on a power screw having double start square threads of 30 mm mean diameter. Friction angle and lead angle are 7 and 9 respectively

Calculate torque required to overcome thread friction if axial load of

1.	Calculate torque required to overcome thread friction if axial load of 8 kN acts on a power screw having double start square threads of 30 mm mean diameter. Friction angle and lead angle are 7 and 9 respectively
A.	68.81 N-m
B.	41.90 N-m
C.	34.40 N-m
D.	Insufficient data
Answer» D. Insufficient data

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Calculate torque required to overcome thread friction if axial load of 8 kN acts on a power screw having double start square threads of 30 mm mean diameter. Friction angle and lead angle are 7 and 9 respectively

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