The four arms of a porter governor is 250 mm long. The upper and lower arms are pivoted to links 40 mm and 50 mm respectively from the axis of rotation. Each ball has a mass of 5 kg and the sleeve mass is 50 kg. The force of friction on the sleeve of the mechanism is 40 N. Determine the range of speed of the governor for extreme radii of rotation of 125 mm and 150 mm.

The four arms of a porter governor is 250 mm long. The upper and lower arms are pivoted to links 40 mm and 50 mm respectively from the axis of rotation. Each ball has a mass of 5 kg and the sleeve mass is 50 kg. The force of friction on the sleeve of the mechanism is 40 N. Determine the range of speed of the governor for extreme radii of rotation of 125 mm and 150 mm.

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 7.48P: Find the smallest distance d for which the hook will remain at rest when acted on by the force P....

See similar textbooks

Similar questions

In a porter governor the mass of the central load is 18 kgand the mass of each ball is 2kg. the top arms (250+X) mm while the bottom arms are (300+X) mm long. The friction of the sleeve is 20 N. If the top arms make 45 deg with the axis of rotation in the equilibrium position, find the range of the speed of the governor in that position Note X is the student roll no. for example if the student roll no is A20 then X=20
a. Each arm of a Porter governor is 200 mm long and is hinged at a distance of 40 mm from the axis of rotation. The mass of each ball is 1.5 kg and of the sleeve 25 kg. When the links are at 30° to the vertical, the sleeve begins to rise at 260 rpm. Assuming that the friction force is constant, find the maximum and minimum speeds of rotation when the inclination of the arms to the vertical is 45°. b. The four arms of a porter governor is 250 mm long. The upper and lower arms are pivoted to links 40 mm and 50 mm respectively from the axis of rotation. Each ball has a mass of 5 kg and the sleeve mass is 50 kg. The force of friction on the sleeve of the mechanism is 40 N. Determine the range of speed of the governor for extreme radii of rotation of 125 mm and 150 mm. Consider the force diagrams attached.
012/ A Porter governor has links 150 mm lang and are allached to pivots at a radial distance of 30 mm from the vertical axis of the govermor. The mass of cach ball is 1.75 kg and the mass of the sleeve is 25 kg. The governor sleeve ready to rise at 300 rpm when the links are at 30 to the vertical. Assuming the friction force to be constant, find the value of the Inction force minimum and maximum speed of rotation when the inclination of the links is 45' to the vertical Page 14 of 15
The arms of a Proell governor are 275 mm long and are pivoted on the axis of rotation. The extensions of the lower arms on which each ball is carried is 100 mm long and weight of the ball is 5 kg. The central load on the sleeve is 75 kg. If the ball centers are vertically above the pin joint connecting the upper and lower arms when the radius of rotation is 187.5 mm, determine the corresponding equilibrium speed.
5. The arms of a Porter governor are 300 mm long. The upper arms are pivoted on the axis of rotation and the lower arms are attached to the sleeve at a distance of 35 mm from the axis of rotation. The load on the sleeve is 54 kg and the mass of each ball is 7 kg. Determine the equilibrium speed when the radius of the balls is 225 mm. What will be the range of speed for this position, if the frictional resistances to the motion of the sleeve are equivalent to a force of 30 N? [Ans. 174.3 r.p.m. ; 8.5 r.p.m.]
a) The length of the arms of a Porter governor is 300mm long. The upper and lower 10 arms are pivoted to links at 50mm and 60mm, respectively, from the axis of the rotation. The mass of each ball is 5kg and the sleeve is of mass 60kg. The frictional force on the sleeve is 35 N.Determine speed range for extreme radii of rotation of 120mm and 150mm.
In the figure shown, the coefficient of kinetic friction between the block and the incline is 0.40. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction in the pulley.
A loaded governor of the Porter type has equal arms and links each 250 mm long. The mass of eachball is 2 kg and the central mass is 12 kg. When the ball radius is 150 mm, the valve is ful open andwhen the radius is 185 mm, the valve is closed. Find the maximum speed and the range of speed. If themaximum speed is to be increased 20% by an addition of mass to the central load, find what additionalmass is required?
The system shown below is made up of two pulleys attached to the same shaft, with radii ri and re of 0.29 mm and 0.43 mm, respectively. The total mass of the pulley system is 14 kg and its turning radius is 0.26 mm from its center. The mass of block A is 9 kg and the mass of block B is 2 kg. If the coefficient of kinetic friction between block B and the floor is 0.2, find the angular acceleration of the pulley.
Q. The upper and lower arms of Porter governor are 0.25 m each and are pivoted 30 mm from the axis of rotation. The radius of rotation Is 130 mm. The mass of the ball and sleeve are 3 kg and 38 kg respectively. Find the effort and power of the governor.
PROBLEM NUMBER 2 DYNAMICS THE CIRCULAR PACKAGE (B) AND THE BOX PACKAGE (A) SHOWN BELOW HAS AN IDENTICAL MASS OF 2.70 kg. IF THE COEFFICIENT OF KINETIC FRICTION BETWEEN BOX A AND THE CONTACT SURFACE IS 0.15. CALCULATE THE ACCELERATION OF BOX A IF THE CIRCULAR PACKAGE MOVES DOWN WARD A 34°
Q12 / A Porter governor has links 150 mm long and are attached to pivots at a radial distance of 30 mm from the vertical axis of the governor. The mass of each ball is 1.75 kg and the mass of the sleeve is 25 kg. The governor sleeve ready to rise at 300 rpm when the links are at 30 ° to the vertical. Assuming the friction force to be constant, find the value of the friction force, minimum and maximum speed of rotation when the inclination of the links is 45 ° to the vertical.