Chapter 3, Problem 63P

Find the forces in the three cable segments and the angles 1,2, and 3.

3. For protection, the barrel barrier is placed in front of a bridge pier. The relationship between the force and deflection of the barrier is as given in the plot. For a car weighing 4000 lb and travelling at 50 mph as it first impacts the barrier, find the penetration of the car into the barrier. Note: One interpretation of Up = fF.dr is that work is the area under the force-deflection curve. F (lb) F=90(10)³x¹/2 -x (ft)

11. height of 4.5 feet. How much will the spring be compressed? If a spring has a force constant of 250 N/m and a 175g block is dropped onto the spring from a

A 150-N force is applied to the foot-operated air pump. The return spring Sexerts a 2.6-N•m moment on member OBA for this position. Determine the corresponding compression force Cin the cylinder BD. If the diameter of the piston in the cylinder is 41 mm, estimate the air pressure generated for these conditions. State any assumptions. Enter a positive number for the compression force C. 20 135 10 150 N 140 B 90 130 200 -55- Dimensions in millimeters

A screw conveyor is to be installed to convey 850 bushels of wheat per hour over a distance of 90 ft. Calculate the horsepower requirement for the installation.

The support at A is a smooth pin and the support at B is a roller. Find all of the support reactions at A and B. Include the directionš of the supports as well. fom 400 N 100 N/m A B 4 m 4 m

Determine the resultant force acting on the elbow of the thin-walled pipe when the pipe carries a uniform internal pressure p0.

is used to hold block The spring clamp of Fig. E into the corner. The force in the spring is F = k(€ – lo), where € is the present length of the spring, lo = 15 mm is the unstretched length of the spring, and k = 5000 N/m is the spring constant. Determine all forces acting on mem- ber ABC of the spring clamp and the force exerted by the spring clamp on the block E. B E 30° 30° 40 mm -20 mm20 mm

The energy is transferred from the shaft to the water and from the impeller to the water. Select one: O True O False