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As shown in the figure below, a cantilever beam undergoes a completely reversing transverse load of F = ±2kN. For the material, Sut = 770 MPa and Syt = 420 MPa. The endurance limit Se' = 0.5×Sut and the strength at N=103 is 0.83×Sut. The surface modification factor ka = 0.488, the size modification factor kb = 0.85 and all other modification factors are 1.0. If the cantilever beam should support the load F for 104 cycles, determine the cross sectional area. Apply the safety factor of 1.5.
a 200g hockey puck is launched up a metal ramp that is inclined at a 30° angle. what vertical height does the puck reach above its starting point
When the coil of a motor is rotating at maximum speed, the current in the windings is 4.33 A. When the motor is first turned on, calculate the resistance of the windings.
What is now the chance of drawing a white counter? [Notice that the state of the bag, after the operations, is exactly identical to its state before.]
An ideal transformer has 255 loops in its primary coil and 125 loops in its secondary coil. what is the rms secondary voltage
If a camera with a 55 mm lens is to resolve two objects that are 5.0 mm from each other and both objects are 3.5 m from the camera lens, What is the resolving power
1. a converging lens has a focal length of f 23 cm. an object is placed 44 cm from the lens. find the size of the
a 0.250-mm-diameter silver wire carries a 40.0ma current. what are a the electric field and b the electron drift speed
Two ice skaters, with masses of 50.0kgand 85.0kg, are at the center of a 60.0m-diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink.
A block of mass m starts from rest at the top of a ramp of vertical height h . The block slides down frictionless ramp and reaches a speed v at the bottom . if the same bock were to reach a speed 3v at the bottom , it would need to slide down a fr..
light falls on a pair of slits 0.00198 cm apart. the slits are 84.2 cm from the screen. the first-order bright line is
What does Hamilton seem to think is the greatest threat to liberty? Based on the Article of The Trial of John Peter Zenger (1735)
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ignore air resistance. estimate the average mechanical power output of the engine
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