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A person (mass m1) who is kneeling on a plywood panel (mass m2) wishes to push himself and the panel away from the right-hand wall. Determine a condition on µ,2 which would allow him to do this, as opposed to his slipping relative to a stationary panel. The two applicable coefficients of static friction are µ,1 and µ,2. Evaluate µ,2 for m1 = 80 kg, m2 = 10 kg, and µ,1 = 0.60.
What is the communication time if the local conditions limit spacecraft visibility to elevation angles larger than = 18 degrees?
Consider two beams, both of length L, with the cross sectional configurations shown. Each beam is subjected to a pure moment, M. Determine the ratio of the maximum principal stress of beam
an elevator weighs 1000lb and carries a load of 600 lbs and decends at 20fts. the cable that supports the elevator has
you are designing a remote-area power supply based on a miniature wind turbine that is 20 efficient. meteorological
an insulated vertical piston-cylinder device initially contains 11.56 kg of water 6.94 kg of which is in vapor phase.
What is the rate of convection heat transfer from the first strip the fifth strip the tenth strip, all the strips?
Consider a two- dimensional, straight triangular fin of Length L= 50mm and base thickness t= 20mm. The thermal conductivity of the fin is k= 25 W/mK. The base temperature is T_b= 50 degrees Celsius, and the fin is exposed to convection conditions cha..
a jet engine propels an aircraft at 300 ms through air at 60 kpa and 0 c. the inlet diameter of this engine is 2 m the
Calculate the change in length of the steel and aluminium due to the temperature change alone. Then, assuming that the load P is not applied, and the temperature increases from 60?F to 110?F, calculate the change in length of the steel and aluminium.
a piston of diameter 100 mm moves inside a cylinder of 100.1 mm diameter. find the percent decrease in force necessary
Beam deflection at corner through centroid, Sometimes the term centroid throws me for a loop. So, how would I set this problem up?
a mass of 1 kg of air contained in a cylinder at 1.5 mpa 1000 k expands in a reversible isothermal process to a volume
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