An open flat belt is required to transmit 50 kW from a pulley of 1.5 m effective diameter running at 300 r.p.m. The angle of contact is spread over 11/24 of the circumference. The coefficient of friction between the belt and pulley surface is 0.3. Determine, taking centrifugal tension into account, width of the belt required in mm. It is given that the belt thickness is 9.5 mm, density of its material is 1100 kg/m3 and the related permissible working stress is 2.5 MPa.

An open flat belt is required to transmit 50 kW from a pulley of 1.5 m effective diameter running at 300 r.p.m. The angle of contact is spread over 11/24 of the circumference. The coefficient of friction between the belt and pulley surface is 0.3. Determine, taking centrifugal tension into account, width of the belt required in mm. It is given that the belt thickness is 9.5 mm, density of its material is 1100 kg/m3 and the related permissible working stress is 2.5 MPa.

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...

See similar textbooks

Similar questions

The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.
Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.
The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
The cone clutch transmits the torque C through a conical friction surface with cone angle . The inner and outer radii of the friction surface are a and b, respectively. The left half of the clutch is keyed to the shaft, and the right half drives a machine (not shown) through a gear attached to its outer rim. Assuming uniform pressure on the friction surface, show that the maximum torque that can be transmitted by the clutch is
i need the answer quickly
A V-belt drives a pulley at a speed of 1440 m/min. The coefficient of friction between belt andpulley is 0.3, semi V-groove angle is 22.5o and angle of contact of belt with the pulley is 160o. Ifthe mass of the belt is 0.45 kg/m and if permissible pull in the belt is 800 N. Calculate the power.Consider the centrifugal tension in the belt.
A V-belt drives a pulley at a speed of 1440 m/min. The coefficient of friction between belt and pulley is 0.3, semi V-groove angle is 22.5 degree and angle of contact of belt with the pulley is 160 degree. Ifthe mass of the belt is 0.45 kg/m and if permissible pull in the belt is 800 N. Calculate the power.(Consider the centrifugal tension in the belt.)
i need the answer quickly
Two parallel shafts whose centre lines are 4 m apart, are connected by an open belt drive. The diameter of the larger pulley is 1.8 m and that of smaller pulley 3 m. The initial tension in the belt when stationary is 3 kN. The coefficient of friction between the belt and the pulley is 0.3. Calculate the power transmitted, when the smaller pulley rotates at 550 r.p.m. and length of the belt.
A leather belt of thickness 6 mm and width 80 mm connects two pulleys of 500 mm diameter and 900 mm diameter, their centres being 2.5 m apart. If speed of the larger pulley is 300 r.p.m, the coefficient of friction between belt and pulley is 0.25 and maximum belt stress is 100 N/cm2, determine the maximum power transmitted and initial belt tension.
EA troughed belt, 900 mm wide, transports 140 ton of coal per hour at a speed of 6,48 km/h up an incline of I in 40 and then runs horizontally for 75 m. The belt has 5 plies and the maximum allowable belt tension must not exceed 5 kN/m width per ply. The mass of the moving parts of the conveyor is 48 kg/m, the return run included. The coefficient of friction for the pulleys is 0,042. The angle of contact between the belt and the pulleys is 390° and the coefficient of friction is 0,25. Calculate the length of the belt between the loading and discharge points.
i need the answer quickly