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A mass of 100 kg is uniformly accelerated upwards on a light cable by a hoist for a period of 5 s to a speed of 1.75 m s 1 . The hoist has a winding drum of mass 220 kg, diameter 1 m and radius of gyration 300 mm. Calculate (a) the vertical height raised, (b) the final angular velocity of the drum, (c) the work done, (d) the input torque to the driving motor, (e) the average power developed.
while an oil well is being drilled at a depth of 6000 ft it is observed that the top of the 8-in.-diameter steel drill
Gravitational forces pull the two stars together. What is the speed of each star at the moment of impact?
The turbine of a large gas turbine engine receives gas from the combustion chamber at 5 MPa, 900C and 110m/s. At the turbine outlet, gas exits at 100kPa, 140C with a velocity of 60m/s. If the power output from the turbine is 5000kW, what is the mass ..
Determine the spring force FS necessary for equilibrium - usually rely on joint friction to aid in maintaining static equilibrium.
At the instant shown, the rigid body OA rolls counter clockwise without slipping on the fixed horizontal surface, and point O has a velocity 2 m/s to the left and an acceleration of 1 m/s2 to the right. Point O is at the center of the semi-circle reg..
Argon enters a pipe at 100 kPa and 27oC and is compressed (via a compressor. meaning work is being done on the system) in an adiabatic, steady flow process to 200 kPa abd 100oC at the exit. Calculate the work required for this process in KJ/kg.
The compressor and turbine of a simple gas turbine each have isentropic efficiencies of 80%. The compressor ratio is 12. The minimum and maximum temperatures are 290 K and 1400 K, respectively. On the basis of an air-standard analysis, compare the va..
what is the angle at which diffraction occurs in au from 101 using incident radiation with a wavelength of 1.54 adeg.
Typical towns in states with big plains like Texas need an elevated tank to supply tap water. Below there is a picture of a typical elevated tank. If we approximate the tank as a cylinder with a diameter of 50 ft and a height of 25 ft, answer the fol..
A dynamic compression force,F = 3.5 + 3.5cos (45t) kN is applied to the rod of an ideal cylinder with a bore diameter of 8.4 cm (take note that the force is in kN) (a) Assuming the rod-side of the cylinder is at atmospheric pressure, what gauge press..
estimate the amount of torque needed to actuate the knee near 0 deg flexion standing position based on the friction in
a piston-cylinder device contains 1 kg of h2o. the water is at 800oc and a pressure of 20 mpa. heat transfer occurs
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