. An object of mass 12 kg is suspended from a pulley which has a mass of 6 kg and a radius of rotation of 0.25 m. If at that time the pulley rotates with an angular velocity of 5 rad/s, we want to know that when the object moves down a distance of 2 m, then at what speed is the pulley rotating? If the friction force on the pulley bearing produces a moment of resistance of 2 N-m 12 kg 0.3 m

. An object of mass 12 kg is suspended from a pulley which has a mass of 6 kg and a radius of rotation of 0.25 m. If at that time the pulley rotates with an angular velocity of 5 rad/s, we want to know that when the object moves down a distance of 2 m, then at what speed is the pulley rotating? If the friction force on the pulley bearing produces a moment of resistance of 2 N-m 12 kg 0.3 m

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 7.11P: Solve Prob. 7.10 assuming that the pick-up truck has front-wheel drive.

See similar textbooks

Similar questions

An object of mass 12 kg is suspended from a pulley which has a mass of 6 kg and a radius of rotation of 0.25 m. If at that time the pulley rotates with an angular velocity of 5 rad/s, we want to know that when the object moves down a distance of 2 m, then at what speed is the pulley rotating? If the friction force on the pulley bearing produces a moment of resistance of 2 N-m
A 2kg body, attached in a 25cm string, is under a uniform circular motion with a velocity of 2m/s. Determine the centripetal force in Newtons
A hoop of radius 95mm and mass 100g is rotated via a capacitor driven power source with P(t)=1.61e-1.3tW. (since it is a hoop, it is a special case, and r=rG) Assuming the hoop is accelerated from rest, determine the rotational velocity after t=8.5s. [rad.s-1] Determine the rotational speed of the hoop after t=8.5s if the power source acts to roll the particle from rest on a horizontal surface. [rad.s-1]
If the man pulls the strap with constant acceleration during a short time interval Δt, calculate the force (in Newtons) that he must exert in spinning up the disc. These are the numbers. Strap's final speed = v = 1.5 m/s. The disc's radius is R = 0.4 m The small disc's radius is 2 cm The disc's mass is M = 2.4 kg The short time interval is Δt = 0.3 s The disc initially is non-rotating.
A prop shaft of a heavy duty truck has two bearings which are positioned at 3 meters from each other. The shaft must rotate 30 rad/s when the truck travels at the speed of 40 m/s. Such a shaft carries two masses of 10 kg and 5 kg acting at the extremities of the arms 0,45 m and 0,6 m long, respectively. The planes in which these masses rotates are 1,2 m and 2,4 m, respectively, from the left end bearing supporting the shaft. The angle between the arms is 60 degrees. If the masses are balanced by two counter-masses named X and Y rotating with the shaft acting at a radius of 0,3 m and placed at 0,3 m from each bearing centre. 1.Draw a diagram illustrating the position of masses on the shaft. 2.Calculate the dynamic force in Newtons 3.Calculate the moment acting on the shaft in Newton-metre.
A locomotive consists of multi cylinder reciprocating engine running at a speed of 8 r.p.s having a stroke length of 25cm, which carries a mass of reciprocating part whose magnitude is 8kgs with a revolving part of 4kgs rotating at 17cm radius. If two third of the reciprocating parts and all the revolving parts are to be balanced, determine the following when the crank has rotated 560 from top dead centre to bottom dead centre. 1. Maximum primary unbalanced force of reciprocating mass in newtons 2. Balancing mass required at a radius of 35cm in kgs 3. Variation of maximum & minimum tractive force in newtons 4. Variation of maximum & minimum swaying couple for the given centre distance 72cm between the two cylinders in (N-m) 5.…
A shaft with 3 meters span between two bearings carries two masses of 10 kg and 20 kg acting at the extremities of the arms 0.45 m and 0.6 m long respectively. The planes in which these masses rotate are 1.2 m and 2.4 m respectively from the left end bearing supporting the shaft. The angle between the arms is 60°. The speed of rotation of the shaft is 200 r.p.m. If the masses are balanced by two counter-masses rotating with the shaft acting at radii of 0.3 m and placed at 0.3 m from each bearing centers, estimate the magnitude of the two balance masses and their orientation with respect to the X-axis, i.e. mass of 10 kg ‎‏Note: It must be solved using the graphic method, not the equations method.
A shaft with 3 meters span between two bearings carries two masses of 10 kg and 20 kg acting at the extremities of the arms 0.45 m and 0.6 m long respectively. The planes in which these masses rotate are 1.2 m and 2.4 m respectively from the left end bearing supporting the shaft. The angle between the arms is 60°. The speed of rotation of the shaft is 200 r.p.m. If the masses are balanced by two counter-masses rotating with the shaft acting at radii of 0.3 m and placed at 0.3 m from each bearing centers, estimate the magnitude of the two balance masses and their orientation with respect to the X-axis, i.e. mass of 10 kg.
A 100 kg vehicle initially travels clockwise in a circular path with a radius of 10 m at a speed of 5 m/s. If a counterclockwise couple moment of 100 Nm is applied for 10 s, and the vehicle continues to travel on a circular path at 5 m/s, then the circular path radius must drop to from 10 m to 8 m. True False
A prop shaft of a heavy-duty truck has two bearings which are positioned at 3 metres from each other. The shaft must rotate at 30 rad/s when the truck travels at the speed of 40 m/s. Such a shaft carries two masses of (MA = 10 kg) and (MB = 5 kg) acting at the extremities of the arms 0.45 m and 0.6 m long, respectively. The planes in which these masses rotate are 1.2 m and 2.4 m respectively, from the left end bearing supporting the shaft. The angle between the arms is 60°. If the masses are balanced by two counter-masses (named X and Y) rotating with the shaft acting at a radius of 0.3 m and placed at 0.3 m from each bearing centre:
A locomotive consists of multi cylinder reciprocating engine running at a speed of 8 r.p.s having a stroke length of 29cm, which carries a mass of reciprocating part whose magnitude is 11kgs with a revolving part of 5kgs rotating at 17cm radius. If two third of the reciprocating parts and all the revolving parts are to be balanced, determine the following when the crank has rotated 500 from top dead centre to bottom dead centre. solve 4 and 5 1. Maximum primary unbalanced force of reciprocating mass in newtons 2. Balancing mass required at a radius of 41cm in kgs 3. Variation of maximum & minimum tractive force in newtons 4. Variation of maximum & minimum swaying couple for the given centre distance 76cm between the two cylinders in (N-m) 5. Magnitude…
The double pulley shown in the figure has a mass of 3 kg and a radius of 100 mm rotation. Knowing that when the pulley is at rest, it is applied to the cable in B, a force P of magnitude equal to 24N, determine the speed of the center of the pulley after 1.5 s and the tensile force on cable C.