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Two 8° wedges of negligible weight are used to move and position the 800-kg block. Knowing that the coefficient of static friction is 0.30 at all surfaces of contact, determine the smallest force P that should be applied as shown to one of the wedges.
a 1200-kg automobile is moving at a speed of 90kmh when the brakes are fully applied causing all four wheels to skid.
A particular motor has the following specifications: no load speed = 5000 rpm, stall torque = 200mN-m, no load current = 0.25 A, rated operating = 2500 rpm, 100mN-m, 5A. Create the speed-torque curve, torque-current curve, power-torque curve, and det..
the load is being lifted upward at a constant rate of 9 ms relative to the crane boom ab. at the instant shown the boom
consider the signal yt24sin3pit3cos3pit with t in units of seconds. determine athe fundamental frequency in hz
a steady flow compressor is used to compress helium from 100 kpa and 20 degrees celcius at the inlet to 1400 kpa and
An outside wall of a building is constructed of 1/2 inch gypsum sheeting, 8 inches of concrete block (hollow, 3 oval core), and 4 inches of common brick. The inside of the building is maintained at 75F dry-bulb temperature and 65F wet-bulb temperatur..
the motor of a speed boat is shut off when it has attained a speed of v0. now the boat is slowed down by a retarding
steam entering a nozzle has an enthalpy of 3200 kjkg and its intial velocity is 75 ms. the exit stream has an enthalpy
explain the following terms with respect to 4-storke cycle internal combustion engines strokebore ratio piston
a machinist is making engine parts with axle diameter of 0.7 inch. a random sample of 15 parts shows mean diameter
The asymmetric simple truss is loaded as shown. Determine the reactions at A and D. Neglect the weight of the structure compared with the applied loads. Is the knowledge of the size of the structure necessary?
Volunteer Pharmaceuticals (VP) wants to set aside money in the R&D fund to seek supplemental drug applications of its two newly developed drugs. Instead of putting away $780 million now, VP plans to set aside $A each year from year 1 through 40. What..
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