A simple band brake has a 76 cm drum and fitted with a steel band 2/5 cm thick lined with a bake lining having a coefficient of friction of 0.25. The arc of contact is 245 degrees. The drum is attached to a 60 cm hoisting drum that sustains a rope load of 820 kg. The operating force has a moment arm of 1.50 m and the band is attached 12 cm from the pivot point. Find the torque just required to support the load (clockwise).

A simple band brake has a 76 cm drum and fitted with a steel band 2/5 cm thick lined with a bake lining having a coefficient of friction of 0.25. The arc of contact is 245 degrees. The drum is attached to a 60 cm hoisting drum that sustains a rope load of 820 kg. The operating force has a moment arm of 1.50 m and the band is attached 12 cm from the pivot point. Find the torque just required to support the load (clockwise).

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 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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