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Bucket A and block C are connected by a cable that passes over drum B. Knowing that drum B rotates slowly counterclockwise and that the coefficients of friction at all surfaces are µs =0.35 and µk = 0.25, determine the smallest combined mass m of the bucket and its contents for which block C will
(a) remain at rest,
(b) start moving up the incline,
(c) continue moving up the incline at a constant speed.
A laminar boundary layer of 20-C atmospheric air moving at 2 m=s exists on one side of a 2-m-wide, 3-m-long ?at plate. At x ¼ 3 m ?nd:
a six liter 6 l pot is fitted with a heavy lid that allows a maximum of 200 kpa of absolute pressure. heat is added to
A piston-cylinder assembly contains 2 lb of water initially at 100 psi and 400 F. The water undergoes two processes in a series, first a constant pressure process and then a constant-volume process. At the end of teh constant-volume process the tempe..
a truncated cone 30 cm high is constructed with aluminum. the diameter at the top is 7.5 cm and the diameter at the
determine the shortest time possible for the rear wheel drive 2 mg truck to achieve a speed of 16 ms with a constant
Two simple pendulums are related as follows. Pendulum A has a length LA and a bob of mass mA; pendulum B has a length LB and a bob of mass If the period of A is twice that of B, What is the relationship between LA and LB?
A material has a strength coefficients K = 100, 000 psi Assuming that a tensile-test specimen made from this material begins to neck at a true strain of 0.17, show that the ultimate tensile strength of this material is 62,400 psi.
in an experimental study designed to simulate the manner in which a cat drinks a glass plunger simulating a cats tongue
Examples of materials that have directional properties as a single crystal but are isotropic in their polycrystalline form.
15000 monodisperse particles are released simultaneously and allowed to settle in still air for 5 min. if the particles
consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of
Air is contained in a piston-cylinder assembly, initially at 40 lbf/in^2 and 600R. The air expands in a polytropic process with n=k=1.4 until the volume is doubled. Modeling the air as an ideal gas with constant specific heats,
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