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A cam in a large machine can be modeled as applying a 10,000 N-force over an interval of 0.005 s. This can strike a valve that is modeled as having the physical parameters m = 10 kg, c = 18 N s/m, and stiffness k = 9000 N/m.
The cam strikes the valve once every 1 s. Calculate the vibration response, x(t), of the valve once it has been impacted by the cam.
The valve is considered to be closed if the distance between its rest position and its actual position is less than 0.0001 m. Is the valve closed the very next time it is hit by the cam?
where k is the coefficient of kinetic friction between the blocks and the ground. Also, what is the distance the blocks slide on the surface before they separate?
Trying to find a solution for problem 2.33 in Fundamentals of Heat and Mass Transfer, seventh edition.
Determine the coordinates and of the centroid C of the area shown in the figure.
A specimen of aluminium having a rectangular cross section 9.9 mm × 13.0 mm (0.3898 in. × 0.5118 in.) is pulled in tension with 35300 N (7936 lbf) force, producing only elastic deformation. The elastic modulus for aluminium is 69 GPa (or 10 × 10 6..
a 200 mm diameter sight window on the wall of a furnace is losing heat at a rate of 1500 w. if the furnace is at 1200
Determine the minimum effective coefficient of friction at the rear wheels to prevent slipping. The mass of the loaded truck with mass center at G is 1900 kg.
During some actual expansion and compression processes in piston-cylinder devices, the gases have been observed to satisfy the relationship PVn= C, where n and C are constants. Calculate the work done when a gas expands from 350 kPa and 0.03 m3 to a ..
Determine the total force, in kN, on the bottom of a 100 A 50 m swimming pool. The depth of the pool varies linearly along its length from 1 m to 4m. Also, determine the pressure on the floor at the center of the pool.
a container with volume 2 m3 filled with three different gases 20 kg oxygen at -23 c 50 kg nitrogen gases at 27 c and
what effect do finned surfaces have on the overall heat transfer coefficient and hence the performance of a heat
a viscous liquid density of 1180 kgm3 and dynamic vicosity of 0.0045 n sm2 flows at a volumetric rate of 12.6 mls
The uniform 6-kg slender rod rests on the top center of the 3kg block. If the coefficients of static friction at the points of contact are ua=.4 and ub=.6, and uc=.3, determine the largest couple moment M which can be applied to the rod without ca..
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