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Mechanical Engineering Archive: Questions from December 15, 2022

A bar, 0.4 m long, rests at A on a vertical wall and at B on an inclined surface, as shown in the figure. End B of the bar has a velocity vB =0.5 m/s in the direction shown in the figure. a. Locate, i
Pb. 3. Una barra, de $ 0,4 \mathrm{~m} $ de longitud, descansa en $ A $ sobre una pared vertical y en $ B $ sobre una superficie inclinada, tal como se muestra en la figura. El extremo $ B $ d

2 answers
$Problem $ 6(10 \mathrm{pts}) $. Verify the following differential expression \[ \operatorname{div}(f \nabla g)=f \nabla^{2}$

Problem $ 6(10 \mathrm{pts}) $. Verify the following differential expression \[ \operatorname{div}(f \nabla g)=f \nabla^{2} g+\nabla f \cdot \nabla g \] where $ f=x^{2}-y^{2}, g=\sin (x+y) $

2 answers
$Determine la energia potencial de la masa A con un peso de $ 49 \mathrm{lbf} $ cuando se desplaza $ 3.6 $ pies a la derec$

$English (US) Determine the potential energy of mass $ A $ with a weight of $ 49 \mathrm{lb} $ when moving $ 3.6 $ feet$

Determine la energia potencial de la masa A con un peso de $ 49 \mathrm{lbf} $ cuando se desplaza $ 3.6 $ pies a la derecha. Ingrese las unidades. English (US) Determine the potential energy of m

2 answers
$Determine la energia potencial de la masa B con un peso de $ 68 \mathrm{lbf} $ cuandola masa $ \mathrm{A} $ se desplaza \$

$English (US) Determine the potential energy of mass $ B $ with a weight of $ 68 \mathrm{lbf} $ when mass $ A $ moves $$

Determine la energia potencial de la masa B con un peso de \( 68 \mathrm{lbf} $ cuandola masa $ \mathrm{A} $ se desplaza $ 4.3 $ pies a la derecha. Ingrese las unidades. English (US) Determine t

2 answers
See figure P12-1. The shaft rotates at 550 rpm and holds a straight B gear of 96 teeth and 6 diametrical step. The teeth have an involutee profile of 20°, at full depth. The gear receives 30 HP from
1. Vea la figura P12-1. El cje gira a $ 550 \mathrm{rpm} $ y sostiene un engrane recto $ B $ de 96 dientes y paso diametral 6. Los dientes tienen perfil de involuta de $ 20^{\circ} $, a profundi

2 answers

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Mechanical Engineering Archive: Questions from December 15, 2022

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