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1 with his weight w equally distributed on both feet a man begins to slowly rise from a squatting position as indicated
a woman is holding a 36-kg sphere in her hand with the entire arm held horizontally as shown in the figure a tensile
a 35-n axial force at b is required to open the spring-loaded plunger of the water nozzle determine the required force
1 cable ab passes over the small ideal pulley c with- out a change in its tension what length of cable cd is required
a woodcutter wishes to cause the tree trunk to fall uphill even though the trunk is leaning downhill with the aid of
calculate the force and moment reactions at the bolted base o of the overhead traffic-signal assembly each traffic
1 a carpenter holds a 12-lb 2-in by 4-in board as shown if he exerts vertical forces on the board determine the forces
an axial-flow turbine stage is to be designed for free-vortex conditions at exit from the nozzle row and for zero swirl
the nose-wheel assembly is raised by the application of a torque m to link bc through the shaft at b if the arm and
1 the power unit a of the tractor-scraper has a mass of 4 mg with mass center at g1 the fully loaded trailer-scraper
1 the designers of lamp mechanisms such as that shown in the figure usually rely on joint friction to aid in
1 the ramp is used as passengers board a small com- a muter airplane the total mass of the ramp and six passengers is
1 the automobile bumper jack is designed to support a 4000-n downward load begin with a free-body diagram of bcd and
1 determine the forces in members cg and gh of the symmetrically loaded truss2 calculate the forces in members ab bg
the small remotely-controlled robotic vehicle of probs 5171 and 5172 is shown again here the 200-m tether has a slight
a length of power cable is suspended from the two towers as shown the cable has a mass of 20 kg per meter of cable if
1 the figure shows the cross section of a rectangular gate 4 m high and 6 m long perpendicular to the paper which
1 determine the y-coordinate of the centroid of the volume obtained by revolving the shaded area about the x-axis
a solid floating object is composed of a hemisphere and a cone of equal radius r made from the same homogeneous
the 3-m plank shown in section has a density of 800 kg m3 and is hinged about a horizontal axis through its upper edge
the small access hole a allows maintenance workers to enter the storage tank at ground level when it is empty two
the semicylindrical steel shell with closed ends has a mass of 266 kg determine the mass m of the lead ballast which
the quonset hut is subjected to a horizontal wind and the pressure p against the circular roof is ap- proximated by p0
problem -1the cast-iron plug seals the drainpipe of an open fresh-water tank which is filled to a depth of 20 ft
the conical surface and circular base of the salt- water buoy are fabricated from thin steel plate which weighs 102