Problem 2.1: The double pulley consists of two parts that are attached to one another. It has a weight of 50 lb and a centroidal radius of gyration of ko = 0.8 ft. Two attached blocks A & B have weight of 30-lb and 40-lb respectively. The kinetic friction coefficient between Block B and rough surface is Hx = 0.15. If the bock A is released from rest, determine the angular velocity of the pulley at the instant the block A moves 4 ft downward. %3D

Problem 2.1: The double pulley consists of two parts that are attached to one another. It has a weight of 50 lb and a centroidal radius of gyration of ko = 0.8 ft. Two attached blocks A & B have weight of 30-lb and 40-lb respectively. The kinetic friction coefficient between Block B and rough surface is Hx = 0.15. If the bock A is released from rest, determine the angular velocity of the pulley at the instant the block A moves 4 ft downward. %3D

Name: 0snProblem 2.1: The double pulley consists of two parts that are atta
Uploaded: 2024-03-20T06:56:55.000Z
Channel: Bartleby
Description: 0snProblem 2.1: The double pulley consists of two parts that are attached to one another. Ithas a weight of 50 lb and a centroidal radius of gyration of ko = 0.8 ft. Two attachedblocks A & B have weight of 30-lb and 40-lb respectively. The kinetic f

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 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

See similar textbooks

Similar questions

The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.
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 contact surface between the 36-lb block and 20-lb homogenous cylinder is frictionless. Can the system be in static equilibrium 0n the rough inclined plane?
Find the equilibrium positions of the 30-lb homogeneous bar and investigate their stability.
The force P applied to the brake handle enables the band brake to reduce the angular speed of a rotating drum. If the tensile strength of the band is 3800 lb, find the maximum safe value of P and the corresponding braking torque acting on the drum. Assume that the drum is rotating clockwise.
The spring attached to the homogenous bar of weight W is undeformed when =0. Determine the smallest spring stiffness k for which the =0 equilibrium position will be stable. Use W = 10 lb, a = 24 in., and b = 6 in. Assume that the spring remains horizontal, which is a valid approximation if is small.
The homogeneous plate of weight W is supported by a ball-and-socket joint at D and three wires. Draw the FBD of the plate and count the unknowns.
The brake pads at C and D are pressed against the cylinder by the spring BF. The coefficient of static friction between each pad and the cylinder is 0.15. Find the smallest tension in the spring that would prevent the cylinder from rotating when the clockwise couple M=2200lbin. is applied. Neglect the weights of the members.
Solve Prob. 7.10 assuming that the pick-up truck has front-wheel drive.
The 40-lb spool is suspended from the hanger GA and rests against a vertical wall. The center of gravity of the spool is at G and the weight of the hanger is negligible. The wire wound around the hub of the spool is extracted by pulling its end with the force P. If the coefficient of static friction between the spool and the wall is 0.25, determine the smallest P that will extract the wire.
Find the stable equilibrium position of the system described in Prob. 10.56 if m = 2.06 kg.
The weight of the uniform bar AB is W. The stiffness of the ideal spring attached to B is k, and the spring is unstretched when =80. If W=kL, the bar has three equilibrium positions in the range 0, only one of which is stable. Determine the angle at the stable equilibrium position.