8-75. The shaft has a square-threaded screw with a lead of 9 mm and a mean radius of 15 mm. If it is in contact with a plate gear having a mean radius of 20 mm, determine the resisting torque M on the gear which can be overcome if a torque of 7 N·m is applied to the shaft. The coefficient of static friction between the gear and the screw is µ = 0.2. Neglect friction at the bearings located at A and B. Problem 8-75 7N-m M 20 mm THA B 15 mm

8-75. The shaft has a square-threaded screw with a lead of 9 mm and a mean radius of 15 mm. If it is in contact with a plate gear having a mean radius of 20 mm, determine the resisting torque M on the gear which can be overcome if a torque of 7 N·m is applied to the shaft. The coefficient of static friction between the gear and the screw is µ = 0.2. Neglect friction at the bearings located at A and B. Problem 8-75 7N-m M 20 mm THA B 15 mm

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 7.56P: The square-threaded screw 0f the C-clamp has a mean diameter of 8 mm and a pitch of 1.6 mm. The...

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