An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of lap is 160°. The smaller pulley runs at 200 r.p.m. the pulley are kept at a distance of 3500 mm. The coefficient of friction between the belt and pulley is 0.25. It is found that the belt transmits 3 kW . Calculate the tensions in tight and slack side and the length of the belt.

An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of lap is 160°. The smaller pulley runs at 200 r.p.m. the pulley are kept at a distance of 3500 mm. The coefficient of friction between the belt and pulley is 0.25. It is found that the belt transmits 3 kW . Calculate the tensions in tight and slack side and the length of the belt.

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 7.72P

See similar textbooks

Similar questions

If PCD=6000lb and PGD=1000lb (both compression), find P and Q.
Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at r=0 to zero at r=R; that is, p=p0(1r2/R2).
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.
3. 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° and angle of contact of belt with the pulley is 160°. If the 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.
Find the power transmitted by a belt running over a pulley of 600 mm diameter at 200 r.p.m. The coefficient of friction between the belt and the pulley is 0.25, angle of lap 160° and maximum tension in the belt is 2500 N.
2. A square threaded screw of mean diameter 25 mm and pitch of thread 6 mm is utilised to lift a weight of 10 kN by a horizontal force applied at the circumference of the screw. Find the magnitude of the [Ans. 966 N] force if the coefficient of friction between the nut and screw is 0.02. A bolt with a squore threaded screw has mean diameter of 25 mm and a nitch of 23 mm It carries an
Find the power transmitted by a belt running over a pulley of 600 mm diameter at200 r.p.m. The coefficient of friction between the belt and the pulley is 0.25,angle of lap 160° and maximum tension in the belt is 2500 N.
In a belt arrangement two pulleys are connected by flat belts having same diameters. Themaximum force on the tight side of belt is 662 N. If co-efficient of friction is 0.3 thenwhat is maximum force on the slack side of the belts?
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.
4.) A flat belt makes contact with an 18 in. diameter pulley through half its circumference. If the coefficient of friction is 0.45, and a torque of 350 ft-lbs is to be transmitted, calculate the belt tensions.
A body of mass 30 kg is pulled by a man with the help of a wire. Calculate the tension induced into wire when coefficient if friction between the ground and the body is 0.45.