A triple-thread Acme-form power screw of 50 mm major diameter is used. The nut makes 1.5 turn per cm of axial travel. A force of 600 N is applied at the end of a 850 mm wrench used on the nut. The mean diameter of the collar is 90 mm. If the coefficient of friction at the thread and at the collar are 0.15 and 0.13, respectively. Determine the weight that is being lifted.
A triple-thread Acme-form power screw of 50 mm major diameter is used. The nut makes 1.5 turn per cm of axial travel. A force of 600 N is applied at the end of a 850 mm wrench used on the nut. The mean diameter of the collar is 90 mm. If the coefficient of friction at the thread and at the collar are 0.15 and 0.13, respectively. Determine the weight that is being lifted.
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.54P: The single-threaded screw of the floor jack has a pitch of 0.5 in. and a mean radius of 1.75 in. The...
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1. A triple-thread Acme-form power screw of 50 mm major diameter is used. The nut makes 1.5 turn per cm of axial travel. A force of 600 N is applied at the end of a 850 mm wrench used on the nut. The mean diameter of the collar is 90 mm. If the coefficient of friction at the thread and at the collar are 0.15 and 0.13, respectively. Determine the weight that is being lifted.
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