Engineering, 20.12.2019 20:31 cascyrio2002
To understand the concept of moment of a force and how to calculate it using a scalar formulation. the magnitude of the moment of a force with a magnitude f around a point o is defined as follows: mo=fd where d is the force's moment arm. the moment arm is the perpendicular distance from the axis at point o to the force's line of action. a stool at a restaurant is anchored to the floor. when a customer is in the process of sitting down, a horizontal force with magnitude f1 is exerted at the top of the stool support as shown in the figure. (figure 1) when the customer is seated, a vertical force with magnitude f2 is exerted on the stool support. if the maximum moment magnitude that the stool support can sustain about point a is ma = 185lb? ft , what is the maximum height d1 that the stool can have if the magnitudes of the two forces are f1 = 70.0lb and f2 = 135lb ? assume that moments acting counterclockwise about point aare positive whereas moments acting clockwise about a are negative. a) as shown, a pipe is anchored to a wall at point a. (figure 2) during the pipe's installation, several forces are applied to the pipe at different locations. if f1 = 14.9lb , f2 = 19.4lb , f3 = 17.9lb , f4 = 12.1lb , d1 = 0.350ft , d2 = 0.700ft , and d3 = 0.500ft , what is mra, the net moment about point adue to these forces? assume that moments acting counterclockwise about point a are positive whereas moments acting clockwise are negative.
Answers: 1
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
To understand the concept of moment of a force and how to calculate it using a scalar formulation. t...
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