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A 50 kg winding drum 75 cm in diameter is used to reel in cable. It is moving at the rate of 2 revolutions per second. The rotation rate then increases by 5.25 rad/s2 for the next 1.5 seconds. It rotates at the new rate for three seconds. Finally it comes to a stop in one half a rotations. What was the total length of cable coiled around the drum during the entire time?
Roll out a sheet of blu-tack, punch out a disk with your specified radius, assemble a flywheel for testing on an electric drill and determine the approximate critical rotation speed in rpm - SEM212 T1 2014
find (a) the power rating of the electric heater and (b) the temperature rise that the air experiences each time it passes through the heater.
Helium enters subsonically and flows isentropically through the converging-diverging duct. Compare the values of Ma, T/T0, and P/P0 for helium with those for air at several locations in the duct. Use 0.163 ≤ Ma ≤ 3.221.
a piston-cylinder device contains 10 kg of water 150 c . initially 2 kg it is vapour phase. the water is then heated
A house is maintained at 1 atm and 24 C and warm air inside a house is forced to leave the house at a rate of 150 m^3/h as a result of outdoor air at 5C infiltrating into the house through the cracks. Determine the rate of net energy loss of th..
an insulated rigid-wall tank contains air at 20 c and 2 bar. a paddle wheel located in the tank does work on the air in
How do you determine the velocity of molten metal flowing through the base of the downsprue?
during this process heat is exchanged with surrounding such that the entire air remains at 30 degree celsius at all times.determine the heat transfer for this process.
a thermopane window consists of two 6-mm thick glasses separated by a stagnant air space of thickness 6 mm. the thermal
two particles a and b start from rest at the origin s0 and move along a straight line such that aa8t-4 fts2 and
the inner and outer surface temperatures of a glass window 5 mm thick are 15degc and 5degc. what is the heat loss
An elevator descends from rest with an acceleration of 5 ft>s2 until it achieves a velocity of 15 ft>s. Determine the time required and the distance traveled.
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