A pulley 500 mm diameter is driven at 375 rev/min by a belt 200 mm wide by 12 mm thick. The tension in the tight side of the belt is three times the tension in the slack side. Calculate the maximum power that can be transmitted if the stress in the belt is not to exceed 400 kN/m2, neglecting the stress set up in the belt due to centrifugal force.

A pulley 500 mm diameter is driven at 375 rev/min by a belt 200 mm wide by 12 mm thick. The tension in the tight side of the belt is three times the tension in the slack side. Calculate the maximum power that can be transmitted if the stress in the belt is not to exceed 400 kN/m2, neglecting the stress set up in the belt due to centrifugal force.

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 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

See similar textbooks

Similar questions

I need help please!
A pulley 610 mm diameter is driven at 300 revs/min by a belt, the tensions in the tight and slack sides of the belt being 670 N and 270 N. Find the power transmitted.
. The mean diameter of the driving pulley for a vec-belt drive with two belts is 110 mm. The pulley groove angle is 40° and the drive transmits 4.4 kW at a speed of rotation of 1500 rev/min. The coefficient of frietion between belt and pulley 0.32, and the angle of lap is 160°. Determine the driving torque and the maximum stress in the belt material if the cross-sectional area of each belt is 120 mm.
A leather belt which is 125 mm wide and 6 mm thick, is used for transmitting power from a pulley. The diameter of the pulley is 750 mm and its angular speed is 500 rpm. The angle of lap is 150° and coefficient of friction is 0.3. If the mass of 1 m3 of leather is 1 kg and stress in the belt is not to exceed 2.75 MPa then find the maximum power that can be transmitted by the bel
Q A shaft rotating at 200 r.p.m. drives another shaft at 300 r.p.m. and transmits 6 kW through a belt. The belt is 100 mm wide and 10 mm thick. The distance between the shafts is 4m. The smaller pulley is 0.5 m in diameter. Calculate the stress in the belt, if it is . An open belt drive, and 2. A cross belt drive. (Take μ = 0.3)
Q2/ A belt drive consist of two V-belts in parallel, on grooved pulleys of the size. The angle of the groove is 30°. The cross – section area of each belt is 750 and u is 0.12. The density of the belt material is 1.2 Mg/m' and the maximun stress in the material is 7 MN/m?. Answer the following questions 1- The centrifugal tension in belts is (a) increases power transmitted (b) decreases power transmitted (c) have no effect on power transmitted (d) increases power transmitted up to a certain speed and then decreases
Two pulleys, one 425mm diameter and the other 210mm diameter are one parallel shaft 2m apart and are connected by a crossed flat belt. Find the length of the belt required and the angle of conduct between the belt and each pulley. What power can be transmitted by the belt when the larger pulley rotates at 200 rev/min, if the maximum permissible tension in the belt is 1 kN, and the coefficient of friction between the belt and pulley is 0.3?
A vehicle of mass 21 tonnes runs into a buffer stop having two buffer springs connected in series each of 1300 kN/cm and 2100 kN/cm stiffness respectively. Find the maximum compression of the springs, if the vehicle is travelling at 115 km/hr. Also calculate the load acting on the spring. The maximum compression of the spring in mm is The load acting on the spring in kN is
Two gears are designed to mesh as shown. Gear 1 is driven by another gear that is not shown which induces a force, F, equal to 52 N as shown. Gear 1 has 78 teeth and a pitch diameter equal to 64 mm. If Gear 2 has 44 teeth, and the gears are to remain at constant speed while the tangent force F is applied, find the Value of the resisting torque that is applied to Gear 2.  Direction that the resisting torque should be applied. Explain youranswer. Note: Gears are not drawn to scale.
In a wheel and differential axle type of lifting machine, a crank handle of 240 mm radius takes the place of the wheel and the diameters of the differential axle are 110 mm and 80 mm respectively. If an effort of 80 N is required at the handle to lift a load of 1.12 kN, find the velocity ratio, mechanical advantage and efficiency at this load.
Q2 / A belt drive consist of two V-belts in parallei, on grooved pulleys of the same size. The angle of the groove is 30". The cross - section area of each belt is 750 mm? and u is 0.12. The density of the belt material is 1.2 Mg/m' and the maximum safe stress in the material is 7 MN/m. Answer the following questions 1- The centrifugal tension in belts is . . (a) increases power transmitted (b) decreases power transmitted (e) have no effect on power transmitted (d) increases power transmitted up to a certain speed and then decreases
Flat belt 100mm wide and 8mm thick transmits power between two pulleys, running at 1600 m/min. The mass of belt is 0.9kg/m length, the angle of lap in the smaller pulley is 165o and the coefficient of friction between the belt and pulleys is 0.3, If the maximum permissible stress in the belt is 2MN/m2, find the maximum power transmitted.