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1 for the instant shown when the crankpins of a two-cylinder engine pass through the horizontal y- z plane connecting
a rear-wheel-drive car is stuck in the snow between other parked cars as shown in an attempt to free the car three
the asymmetric roof truss is of the type used when a near normal angle of incidence of sunlight onto the south-facing
1 a commercial airliner with four jet engines each producing 90 kn of forward thrust is in a steady level cruise when
as part of a test the two aircraft engines are revved up and the propeller pitches are adjusted so as to re- sult in
1 the unstretched length of the spring is r when pin p is in an arbitrary position determine the x- and y-components
1 compute the moment of the 04-lb force about the pivot o of the wall-switch toggle2 determine the moments of the
1 the cable ab carries a tension of 400 n determine the moment about o of this tension as applied to point a of the
determine the n- and t-components of the force f which is exerted by the rod ab on the crank oa evaluate your general
1 the jib crane is designed for a maximum capacity of 10 kn and its uniform i-beam has a mass of 200 kg a plot the
the tool shown is used for straightening twisted members as wooden framing is completed if the force p 30 lb is
the uniform panel door weighs 60 lb and is pre-vented from opening by the strut c which is a light two-force member
1 during a test the left engine of the twin-engine air- plane is revved up and a 2-kn thrust is generated the main
the dolly shown is useful in the handling of 55-gallon drums determine the force f necessary to hold a drum in the
during an engine test on the ground a propeller thrust t 3000 n is generated on the 1800-kg air- plane with mass
1 the young tree originally bent has been brought into the vertical position by adjusting the three guy-wire tensions
1 the uniform i-beam has a mass of 60 kg per meter of its length determine the tension in the two supporting cables and
the lumbar portion of the human spine supports the entire weight of the upper torso and the force load imposed on it we
certain elements of an in-refrigerator ice-cube maker are shown in the figure a cube has the form of a cylindrical
the uniform bar oc of length l pivots freely about a horizontal axis through o if the spring of modulus k is
calculate the normal forces associated with the front and rear wheel pairs of the 1600-kg front- wheel-drive van then
question 1a draw a qualitative graph showing long term projected co2 emissions atmospheric co2 concentrations
a dodecane c12h26 used in jet engine is burned with 0 excess air the products of combustion is then expanded through a