A V-belt from a 10-in. diameter grooved pulley that rotates at 1800 rpm, up to a 36-in. diameter flat pulley. The distancebetween axes is 40” and the throat angle is 40°. The coefficient of frictionbetween the belt and the grooved pulley is 0.2 and with the flat pulley it is also 0.2. Thecross section of the belts is a trapezoid with parallel sides of 1.5” and 0.75”, witha height between them of 1”. The weight of this strap is 0.04 lbf/in3, and the maximumAllowable tension on each belt is 200 lbf. Determine: a) How many straps arethey need. b) The Torque applied in the transmission, c) The Transmitted power.

A V-belt from a 10-in. diameter grooved pulley that rotates at 1800 rpm, up to a 36-in. diameter flat pulley. The distancebetween axes is 40” and the throat angle is 40°. The coefficient of frictionbetween the belt and the grooved pulley is 0.2 and with the flat pulley it is also 0.2. Thecross section of the belts is a trapezoid with parallel sides of 1.5” and 0.75”, witha height between them of 1”. The weight of this strap is 0.04 lbf/in3, and the maximumAllowable tension on each belt is 200 lbf. Determine: a) How many straps arethey need. b) The Torque applied in the transmission, c) The Transmitted power.

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 7.70P: Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at...

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draw free body diagram and A and B please. picture is pretty clear! Block is labeled A (under A is 25 degrees) above is 45 degrees and F pulling down is 50 degrees