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A solid circular drive shaft 2 m long transmits 560 kW of power from the turbine engine of a 25 kN helicopter to its rotor at 900 rpm. If the shaft is steel with a shear modulus G=80 GPa and allowable shear stress = 60 MPa, and if the allowable angle of twist of the shaft is .03 rad, determine the minimum possible DIAMETER of the drive shaft. Assume the axial force on the shaft is equal to the weight of the helicopter. Find the principle stresses on an element on the surface of the shaft. Show the principle stresses on correctly oriented elements
a charge of -8.1 microc is traveling at a speed of 8.7 106 ms in a region of space where there is a magnetic field. the
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at an amusement park there are 200-kg bumper cars a b and c that have riders with masses of 40 kg 60 kg and 35 kg
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