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A block weighing 10 lbf and having dimensions 10 in. on each edge is pulled up an inclined surface on which there is a film of SAE 10W oil at 100ºF. If the speed of the block is 2 ft/s and the oil film is 0.001 in. thick, find the force required to pull the block. Assume the velocity distribution in the oil film is linear. The surface is inclined at an angle of 25º from the horizontal.
if a bar of sae 1040 is to be turned with a high speed steel tool with a feed of 0.015 per revolution and a depth of
a 50 kg crate resting on a flat smooth surface is acted upon by a horizontal force that varies by the equation f1.5t
a seconds pendulum is one that moves through its equilibrium position once each second. the period of the pendulum is
Need help with determining the rate of heat generation required at the welding source to accomplish a weld. A fillet weld is used to join two medium carbon steel plates each having a thickness of 5.0mm.
a flow of liquid glycerine flows around an engine cooling it as it absorbs energy. the glycerine enters the engine at
a brass cube e100 gpa v 0.25poissons ratio is 100 mm long per side. a compressive force of 100kn is applied to one
sketch a fatigue crack growth curve based on the paris law. how does a change in the ratio of the minimum stressmaximum
an office worker claims that a cup of cold coffee on his table warmed up to 80degc by picking up energy from the
a Steel ally to be used for a spring application must have a modulus of resilience of at least 2.07 MPa. What must be the metal's minimum yield strength.
a 0.3 kg bullet is fired into a 3.6 kg wooden block and becomes embedded in it. knowing that the block and bullet move
a rankine cycle operating with ammonia is heated by some low temperature source so the highest t is 120oc at a pressure
let us compare these results to our expectations. we expected the horizontal distance to be on the order of 100 m and
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