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A car of mass 850 kg travels round an unbanked horizontal curve of radius 35 m. The limiting coefficient of friction between the tyres and the road is 0.65. The track width of the car is 1.65 m and its center of gravity is central and at a height of 0.8 m above the road surface. Show that the car is likely to skid rather than overturn if the speed is excessive and calculate the maximum speed in km h 1 at which it can travel round the curve. What will be the reactions of the inner and outer wheels at this speed?
Galvanized iron drainpipes of diameter 50 mm are located at the four corners of a building, but three of them become clogged with debris. Find the rate of downpour (cm/min) at which a single functioning drainpipe can no longer drain the roof.
solid particles having a size of 0.18 mm a sphericity shape factor of 0.91 and a density of 1090 kgm3 are to be
If all of the objects illustrated in the figure have equal masses, which object has the largest moment of inertia about the indicated axis?
a longitudinal aluminum fin k 230 wmk is attached to a copper tube having an outside radius of 0.04m. the length of
Three children are standing on a 5×5-m raft. The weights of the children at Points A, B, and C are 375 N, 260 N, and 400 N, respectively. If a fourth child of weight 425 N climbs onto the raft, determine where she should stand if the other children r..
Air enters the evaporator section of an air-conditioner at 100 kPa, 27oC with a volumetric flow rate of 6 m3/min. R-134a enters the evaporator at 120 kPa with a quality of 0.3 and rate of 2 kg/min and it leaves as a saturated vapor at the same pressu..
a bar of rectangular cross section 20mm times 5mm with a central hole of diameter 4mm is subjected to a tensile force f
Describe a physically-plausible situation where the Reynolds number is (a) 1 (b) 10,000 (c) 1,000,000. For flow in tubes/pipes/ducts, use Red For flow over/along long/blunt objects, use Rel.
for the spring-mass-pulley system of figure 5-37 the moment of inertia of the pulley about the axis of rotation is j
an ideal rankine cycle with an open-feedwater-heater regenerator operates the boiler at 3 mpa the regenerator at 125
Calculate the vacancy concentration in aluminum at 50%, 70%, and 90% of TMP=923 K. Gvf = 0.66 eV, and k = 8.62 x 10-5 eV/K. Calculate ln (nv/N) and 1/T, and plot on a linear scale (hint: should be a straight line).
a vehicle starts from rest then moves rectilinear with a velocity of v 2t2 for 5 s until it reaches a velocity of 50
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