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Each of the plates A, B, and C have a mass of 10 kg. Plate A is on the bottom, plate B is in the middle, and plate C is on the top. Plate A is being pulled to the right with a force of 15 N, Plate B is being pulled to the let with a force of 100 N, and Plate C is being pulled to the right with a force of 18 N. The coefficients of static and kinetic friction are 0.3 and 0.2, respectively, between each of the plates and between plate A and the ground. Determine the acceleration of each plate.
The cart has a velocity of 4 ft/sec to the right. Determine the angular speed N of the wheel so that point A on the top of the rim has a velocity (a) equal to 4 ft/sec to the left, (b) equal to zero, and (c) equal to 8 ft/sec to the right
What do you understand by the term durability? Compared to other considerations, how much importance should be given to durability in the design and construction of concrete structures?
Identical bricks 0.1m wide, and weighting 2kg are placed on a plate (assume the plate has neligible weight). Calculate the total weight (and force F required to balance the plate). How far from x=0 should F be placed so that the plate will not tip..
A 10 m diameter particle of unit density falls through air starting from rest. calculate the time required for the particle to attain 70% of the final terminal speed and the distance traveled by the particle during the time.
A crane is used to lift a concrete pipe weighing 10kN into place. For precision positioning, the worker at C can apply up a 800N force to cable AC. Determine the largest distance d the concrete pipe may be moved.
If bod5 and ultimate bod of a municipal wastewater are 200mg/l and 457 mg/l respectively what is the reaction rate constant? a) .265 b) .050 c) .115 d) .165
The factory will use a 4 ft deep on-site lagoon to stabilize the waste with a loading rate of 20 lb BOD/acre-day. Part a) What is the total BOD loading per day?
Include immediate and consolidation settlements, but ignore secondary compression. In your calculation, use three sublayers with thicknesses of 4 ft, 8 ft and 16 ft for the top, middle and bottom layers. Ignore any settlement caused by the dense s..
Find the dimensions of a rectangular concrete channel to carry a flow of 150 m3/s, with bottom slope 0.015, and mean velocity 10.2 m/s.
At the end of 15 years, the first motor will have a salvage value of $50 and the second motor will have a salvage value of $100. consider the MARR to be 8%. (note : 1HP=0.7457 kw). Determine which motor should be installed based on the PW criterio..
The 3.5mg engine is suspended from a 500 kg spreader beam and hoisted by a crane which gives it an acceleration of 4m/s^2 when it has a velocity of 2m/s. determine the force in chains AC and AD during the lift.
The road is in good condition and is initially dry, but it becomes wet 160 ft before the stalled car (and stays wet until the car is reached). What is the minimum distance from the stalled car at which the driver could apply the brakes and still s..
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