The collar is released from rest in the position shown and slides down the fixed rod. Calculate (a) the stiffness k of the spring (which has been initially pre- compressed 50 mm by the light strap and wires) so that its maximum additional deflection equal 190 mm. (b) The nonnal 1.3 m smooth 10 kg 30 190 mm force N between the rod and the collar at the end position. Ui3= AT 1.0 m P = 250 N Position of B is fixed

The collar is released from rest in the position shown and slides down the fixed rod. Calculate (a) the stiffness k of the spring (which has been initially pre- compressed 50 mm by the light strap and wires) so that its maximum additional deflection equal 190 mm. (b) The nonnal 1.3 m smooth 10 kg 30 190 mm force N between the rod and the collar at the end position. Ui3= AT 1.0 m P = 250 N Position of B is fixed

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 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 velocity of the 8-kg cylinder is 0.3 m∕s at a certain instant. The speed v after dropping an additional 1.5 m is 2.5 m/s. The mass of the grooved drum is 12 kg, its centroidal radius of gyration is k = 210 mm, and the radius of its groove is ri = 200 mm. The frictional moment at O is a constant 3 N∙m. Find the frictional force.
The collar is released from rest in the position shown and slides down the fixed rod. Calculate (a) the stiffiness k of the spring (which has been initially pre- compressed 50 mm by the light strap and wires) so that its maximum additional deflection equal 190 mm. (b) The nomal force N between the rod and the collar at 10 kg 190 the end position. Uj-2= AT
In a porter governor the mass of the central load is 18 kgand the mass of each ball is 2kg. the top arms (254) mm while the bottom arms are (304) 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
The collar of mass m is released from rest while in position A and subsequently travels with neg- ligible friction along the vertical-plane circular guide. Determine the normal force (magnitude and direction) exerted by the guide on the collar (a) just before the collar passes point B, (b) just after the collar passes point B (i.e., the collar is now on the curved portion of the guide), (c) as the collar passes point C, and (d) just before the collar passes point D. Use the values m = 0.4 kg, R = 1.2 m, and k = 200 N/m. The unstretched length of the spring is 0.8R.
In a Porter governor, the mass of the central load is 18 kg and the mass of each ball is 2 kg. The top arms are 250 mm while the bottom arms are each 300 mm long. The friction of the sleeve is 14 N. If the top arms make 45° with the axis of rotation in the equilibrium position, find the range of speed of the governor in that position. 503.2
A motorcycle and rider have a combined mass of 350kg. The each wheel has a mass of 20kg with the diameter of 500 mm. The rider accelerates from 5m/s to 25m/s over a distance of 100m, whilst climbing a hill of slope 1 in 20. Identify the magnitude and effect of gyroscopic reaction torque by calculating the angular velocity and power as the motorcycle ascends the incline when the motorcycle and rider travel at 80 km/h around a left-hand bend of road with the radius 30 m.Explain the effects of energy transfer in mechanical systems (e.g. gears, pulley or flywheel) with uniform acceleration present.
The block B start from rest and slides on the 30 wedge A , which is supported by a horizontal surface . Neglecting friction
A load of W (kN) with corners ABCD standing still in the truck bed wants to be transported.Since it is known that the load does not slide during the movement, the maximum acceleration that the truck can reach without tipping the load and Calculate the coefficient of friction between the load and the truck bed. (C represents the center of gravity of the load). W=6kN b=0.3m d=0.9m e=1.7m
The double pulley shown in the figure is formed by two wheels that are coupled to each other. The complete pulley (formed by the two wheels) has a mass of 15 kg and a turning radius of 110mm. Block A has a mass of 40 kg. If a force of 2 kN is applied to the tied rope of the inner pulley wheel, determine the speed of block A after 3 seconds. At the beginning, the whole system was at rest. Disregard the mass of the string and consider that the moment of inertia (kg.m²) of the complete pulley is given by IP = mko²where m is the mass of the pulley and Ko is the radiusspinning
The desk has a weight of 54 lblb and a center of gravity at GG. The coefficients of static and kinetic friction at AA and BB are μsμs = 0.5 and μkμk = 0.2, respectively. (Figure 1) Determine the initial acceleration of a desk when the man applies enough force FF to overcome the static friction at AA and BB. Find the vertical reaction on each of the two legs at AA.
Determine the maximum speed, If the friction at the sleeve is equivalent of 24 N of load.The arms of a Porter governor are each 210mm long and pivoted on the governor axis. The mass of each ball is 7 kg and the mass of the central sleeve is 36 kg. The radius of rotation of the balls reaches a value of 168mm for maximum speed and draw the governor maximum position line diagram