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1. The cord is attached to the pin at C and passes over the two pulleys at A and D. The pulley at A is attached to the smooth collar that travels along the vertical rod. Determine the velocity and acceleration of the end of the cord at B if at the instant sA = 4 ft the collar is moving upward at 5 ft> s, which is decreasing at 2 ft> s2.
2. The 16-ft-long cord is attached to the pin at C and passes over the two pulleys at A and D. The pulley at A is attached to the smooth collar that travels along the vertical rod. When sB = 6 ft, the end of the cord at B is pulled downward with a velocity of 4 ft> s and is given an acceleration of 3 ft> s2. Determine the velocity and acceleration of the collar at this instant.
a room has walls and a ceiling that conduct heat from the room to the cooler outdoors. if the inside temperature is
The spring is compressed by the rod which is pinned to the lower end of the door and which passes through the swivel block at B. When () = 0, the spring is undeformed. Show that with the proper stiffness k of the spring, the door will be in equili..
a compressor raises the pressure of 3kg of air gamma 1.4 adiabatically from 100kpa 288k to 450kpa. the electric motor
An air-standard dual cycle has a compression ratio of 18.2 and a cut off ratio of 1.31. The pressure ratio during constant volume heat addition process is 1.5. At the beginning of the compression, P1=80 kPa, T1 = 20°C at the beginning of the cycle. U..
A camera case shown on the right is made of plastic with a maximum working stress of 1000 psi. What thickness of material should be used to create the case if the case will be used at 150 feet of depth in sea water?
if block d weighs 300 lb and block b weighs 275 lb, determine the required weight of the block c and the angle theta for equilibrium.
which emits more sox per unit amount of electricity produced a coal-fired plant with a 90 efficient so2 scrubber or an
from fundamentals of engineering thermodynamics book 9.85 for the turbojet in problem 9.84 plot the velocity at the
Consider the following strange but true, units: 1 batman = 3 kilograms 1 hogshead = 63 gallons A basketball has a mass of approximately 624 grams and a volume of 0.25 cubic feet. Determine the density of the basketball in units of of batman per hogsh..
Water, initially a saturated vapor at 150 degrees Celsius, is contained in a piston-cylinder assembly. The water undergoes a polytrophic process (n=1) to a pressure of 0.01 MPa, during which the piston moves freely in the cylinder.
find the thermal efficiency of an ideal reheat rankine cycle of a steam power plant. find the pressure at which
two infinite black plates of 600 and 100 degrees celcius exhange heat by radiation. calculate the heat transfer rate
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