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a 150 kg mass is suspended by wires from two hooks. the lengths of the wires have been adjusted so that the wires are each 50º from horizontal. assume that the mass of the wires is negligible.
a) two hoops support the mass equally so the vertical component of force exerted by either hook will be equal to the force result ion from 75 kg being acted on gravity. calculate this vertical component of force,ƒ_v on the right hook. express you result in newtons.
b) compute the horizontal component of force ƒ_h by using the result obtained in part (a) and trigonometry.
c) determine the force exerted on th mass in the direction of the wire F_R (equal to the tension in the wire
d)if you moved the hooks farther apart to reduce the angel from 50º to 30º would the tension in the wires increase or decrease? why?
calculate the amplitude F0 of the sinusoidal excitation force that is necessary to produce a steady-state vibration with a velocity amplitude of 10 m/s at resonance. what is the corresponding amplitude of the acceleration
what is the uniform deterministic arrival rate if the vehicle queue is cleared in 35 minutes after vehicles begin to arrive (in veh/min.)?
The plant currently has one CMFR for removal of chromium. How many more identical reactors does the sony music company require to meet the regulatory requirements for chromium discharge of 0.01 mg/L into the Pitman Sewer?
Assume you are responsible for determining the maximum load that can be carried by a rectangular barge that is 8 m wide and 18 m long. The water line when the barge is empty is 3 m below the level of the cargo deck.
A nuclear facility in a coastal region is built to withstand ocean wave forces. Suppose the annual maximum wave height of the ocean waves (above the sea level) is a lognormal random variable with mean height of 4.0 meters and a c.o.v. of 0.8
Consider a house that is heated and maintained at 20oC by a heat pump during the winter. What is the maximum COP for this pump if heat is extracted from the outdoor air at (a) 10oC, (b) -5oC, and (c) -30oC
A 1600-ft-long sag vertical curve (equal tangent) has a PVC at station 120+00 and elevation of 1500 ft. The initial grade is -3.5% and the final grade is +6.5%. Determine the elevation and stationing of the low point, PVI and PVT.
Estimate the time when the temperature at the geometric center of a 6 cm diameter apple held in 2`C water stream reaches 3oC. The initial uniform temperature of the apple is 15`C.
A lagoon with volume 1,200 m3 has been receiving a steady flow of a conservative waste at a rate of 100 m3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10 mg/L.
The maximum gage pressure is known to be 8MPa in a spherical steel pressure vessel having a 250mm diameter and a 6mm wall thickness. Knowing that the ultimate stress in the steel used is (sigma u)= 400MPa, determine the factor of safety with respe..
design a bar screen for a peak average flow of 0.46m3/s.you can consider reasonable assumptions.
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