Q. Calculate the minimum speed of a Proell governor, which has equal arms each 200 mm and are pivoted on the axis of rotation. The mass of each ball is 4 kg and the central mass on the sleeve is 20 kg. The extension arms of the lower links are each 60 mm long and parallel to the axis when the minimum radius of the ball is 200 mm.

Q. Calculate the minimum speed of a Proell governor, which has equal arms each 200 mm and are pivoted on the axis of rotation. The mass of each ball is 4 kg and the central mass on the sleeve is 20 kg. The extension arms of the lower links are each 60 mm long and parallel to the axis when the minimum radius of the ball is 200 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

The arms of a Porter governor are 225 mm long. The upper and lower arms are pivoted to links of 35 mm and 45 mm respectively from the axis of rotation. Each ball has a mass of 4 kg and the sleeve mass is 35 kg. The force of friction on the sleeve of the mechanism is 44 N. Determine the range of speed of the governor for extreme radii of rotation of 115 mm and 145 mm.
In a Porter governor, the mass of the central load is 18 kg and the mass of each ball is 2 kg. The toparms are 250 mm while the bottom arms are each 300 mm long. The friction of the sleeve is 14 N. Ifthe top arms make 45° with the axis of rotation in the equilibrium position, find the range of speed ofthe governor in that position.
The arms of a porter governor are each 250 mm long and pivoted on the governor axis. The mass of each ball is 5 kg and the mass of the central sleeve is 30 kg. The radius of rotation of the balls is 150 mm when the sleeve begins to rise and reaches a value of 200 mm for maximum speed. Calculate the speed range of the governor.
The upper and lower arms of a three-fly ball Porter governor are each 350mm long and pivoted on the axis of rotation. The mass of each fly ball is 3 kg and that of the sleeve is 45kg. The radius of rotation of the balls ranges from 100mm to 200 mm. If the friction force between the sleeve and the spindle is 25 N, find the speed range of the governor.
The gear train shown operates in a horizontal plane and is used to transmit motion to the rack D of mass mD = 4.9 kg. If an input torque M = 63 N●m is applied to gear A, what will be the magnitude of the resulting acceleration a of the unloaded rack? (The mechanism which it normally drives has been disengaged.) Gear C is keyed to the same shaft as gear B. Gears A, B, and C have pitch diameters dA = 185 mm, dB = 355 mm, and dC = 185 mm, and centroidal mass moments of inertia IA = 0.45 kg●m2, IB = 3.38 kg●m2, and IC = 0.45 kg●m2, respectively. All friction is negligible.
A loaded governor of the Porter type has equal arms and links each 250 mm long. The mass of each ball is 2 kg and the central mass is 12 kg. When the ball radius is 150 mm, the valve is fully open and when the radius is 185 mm, the valve is closed. Find the maximum speed and the range of speed. If the maximum speed is to be increased 20% by an addition of mass to the central load, find what additional mass is required.
A car and its load weighs 27 kN and the center of gravity is 600 mm from the ground and midway between the front and rear wheel which are 3 m apart. The car is brought to rest from a speed of 54 kph in 5 seconds by means of the brakes. Compute the normal force on each of the front wheels of the car.
In your job as a mechanical engineer you are designing aflywheel and clutch-plate system. DiskA is made of a lighter material than disk B, and the moment of inertia ofdisk A about the shaft is one-third that of disk B. The moment ofinertia of the shaft is negligible. With the clutch disconnected, A isbrought up to an angular speed v0; B is initially at rest. The acceleratingtorque is then removed from A, and A is coupled to B. (Ignorebearing friction.) The design specifications allow for a maximum of2400 J of thermal energy to be developed when the connection ismade. What can be the maximum value of the original kinetic energyof disk A so as not to exceedthe maximum allowed value of the thermalenergy?
1) Three small spheres are rigidly mounted to a horizontal shaft with rotates with angularvelocity omega as shown. Neglect sphere radii, ignore gravity. Spheres have masses m1, m2andm3 as shown.a. What is the angular momentum HO about O the center of the coordinates shown?b. At this instant, what is Ax , the x component of the bearing force at A to offset the dynamicimbalance? Note that you are NOT asked to find any other forces (Ay, Ox, or Oy) in interestof time.
A homogeneous triangular plate of weight W has wheels at B and C. The wheels are of negligible weight and are confined to move along a horizontal slot. If a force P is applied at point A, calculatethe (a) the plate’s acceleration, the (b) normal force at B, and the (c) normal force at C.
The mass of the A gear is 10 kg and the turning radius is 200 mm. Of gear Bits mass is 3kg and the turning radius is 80 mm. When the system is stationary to gear B. Moment of 6 N.m is applied. By neglecting friction; a) The time elapsed until the angular velocity of gear B reaches 600 rpm.b) Find the tangential force from gear B to gear A.
In the figure, the slender bar (1), with a mass of 30 kg, is attached to the sphere (2), with a mass of 80 kg. Given the angular velocity shown at the provided angle, determine: a. The angular acceleration of the combined body b. The reactions in the pin at point O