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1 the power unit a of the tractor-scraper has a mass of 4 mg with mass center at g1 the fully loaded trailer-scraper
1 the designers of lamp mechanisms such as that shown in the figure usually rely on joint friction to aid in
1 the ramp is used as passengers board a small com- a muter airplane the total mass of the ramp and six passengers is
a round bar made of mild steel broken in a tensile test exhibited a cup and cone failure examination showed that the
an infinite steel plate 30 mm thick is subjected to a tensile stress it contains a through thickness crack
1 the automobile bumper jack is designed to support a 4000-n downward load begin with a free-body diagram of bcd and
a 2000 w p electric kettle is powered by a 240 v 3-phase supply via a plug with a fuse of 13 a a calculate the current
a name a code of practice for welding steels that is commonly used the world over b pwht is not used for
visual examination and metallurgical examination are both important steps in obtaining physical evidence explain why
you are in an isolated site with only a hardness testing machine a vice and some rudimentary tools you have a length of
1 determine the forces in members cg and gh of the symmetrically loaded truss2 calculate the forces in members ab bg
you need to go to a site which has good lighting conditions to take photographs of a failure where the components are
a why is it that large steel components made of high-strength martensitic steels sometimes fail by brittle
the data for a failed wheel pinion from the tin dredge are given as in the followingspur gear 20deg pressure angleno of
a number of bucket bushes in a tin dredge move slowly and operate under a high load if you are required to choose a
the small remotely-controlled robotic vehicle of probs 5171 and 5172 is shown again here the 200-m tether has a slight
a length of power cable is suspended from the two towers as shown the cable has a mass of 20 kg per meter of cable if
1 the figure shows the cross section of a rectangular gate 4 m high and 6 m long perpendicular to the paper which
a the hardness of a steel is often used interchangeably with its tensile strength why is this practice used
1 determine the y-coordinate of the centroid of the volume obtained by revolving the shaded area about the x-axis
a transmission line 32 kv and 50 km in length carries a current of 500 a using an al conductor the resistivity of al
rotor bars in large induction motors are often made of a one-piece cast ai alloy a what are the pros and cons of
a solid floating object is composed of a hemisphere and a cone of equal radius r made from the same homogeneous
a boiler tube made of asme sa-213 grade t2 contains 015 c and 06 cr the tube failed in operation with a fishmouth
you are an engineer in charge of a power boiler your task is to ensure that the steam path is in good condition and