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Repeat Problem 15-7 for a double-dwell cam to move the roller follower from 0 to 2 inches in 45° with cycloidal motion, dwell for 150°, fall2 inches in 90° with modified sine motion, and dwell for the remainder. Cam speed is 200 rpm. Choose a suitable r spring rate and preload to maintain follower contact. Select a spring from Appendix D. Assume a damping ratio of0.15.
Problem 15-7.
Figure Pl5-l shows a cam-follower system. The dimensions of the solid, rectangular 2 X 2.5 in cross-section aluminum arm are given. The cutout for the 2-in-diameter , 1.5-in-wide steel roller follower is 3 in long. Find the arm mass, center of gravity location, and mass moment of inertia about both its CG and the arm pivot. Create a linear, one-DOF lumped mass model of the dynamic system referenced to the camfollower and calculate the cam-follower force for one revolution. The cam is a pure eccentric with eccentricity = 0.5 in and turns at 500 rpm. The spring has a rate of 123 lb/in and a preload of 173 lb. Ignore damping.
a certain industrial process requires a steady stream of saturated vapor steam at 200 kpa at the rate of 2 kgs. there
The maximum allowable pipe velocity is 3 m=s, the length of the line is 1500 m, and the difference in elevation between the reservoirs is 30 m. Assume f ¼ 0.02 and K ¼ 0.5.
the water side of the wall of a 70-m long dam is quarter circle with radius of 7-m. determine the hydrostatic force on
The thin-walled cylindrical pressure vessel is constructed from a steel plate by forming the plate into a helix and welding along the edges. Calculate the hoop and longitudinal stresses
RSA Decryption Given e=17 n=51 Decrypt 06 04
A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid and delivers 32 MW of power. The minimum and maximum temperatures in the cycle are 310 and 900 K, and the pressure of air at the compressor exit is 8 times t..
A rectangular channel with a width of 6.0 feet conveys a discharge of 115 cfs. If the depth of flow is 3.0 feet, what is the velocity? What is the Froude num- ber? Is the flow subcritical or supercritical?
405-N rightward force is use to drag a large box across the floor with a constant velocity of 0.678 ms-1. The coefficient of friction between the box and the floor is 0.795. Determine the mass of the box.
Locate the points on the cross section where the neutral axis crosses the y- and the z-axes.
1. imagine a thin cylinder of initial internal diameter do initial wall thickness to and initial fixed length
a steam power plant is to be built to provide 10 mw of electricity. the turbine to be used has an efficiency of 45 and
a car is driven east for a distance of 43 km then north for 23 km and then in a direction 29deg east of north for 27
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