300 N 100 mm 200 mm B K 200 mm D 30° 150 mm E -200 mm Prob. 2
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- A left hand threaded 14 mm diameter A36 steel bolt is stuck in a metal block. Assume the bolt head is flush with the block surface at A. In order to remove the bolt the 50 Nm torque is applied to the bolt head as shown. The block applies a resisting torque "t" to the stuck threads which is assumed to be uniformly distributed along the 50 mm buried depth. G = 75 GPa a) Explain the difference between right and left hand threaded bolts Determine: b) The magnitude of the uniform resisting torque "t" (including proper units) c) The internal torque as a function of x measured from B (a FBD is required) d) The maximum shear stress in the bolt Ans: 92.8 MPa e) The angle of twist of bolt head A with respect to end B Ans: 0.0044 rad f) The largest torque that can be applied to the bolt head before it twists off (Tyield = 150 MPa) %3D02/ Determine the diameter of the rivets and the forces in all rivets. Take Tallowable as 60 MN/mm?. 490mm 125mm 30. 40 KN 125mm .-6 125mm 88mm 0-0-0-0100 mm В A 30 mm
- P1.60 A block of weight W is being pulled over a table by another weight Wo, as shown in Fig. P1.60. Find an algebraic formula for the steady velocity U of the block if it slides on an oil film of thickness h and viscosity u. The block bottom area A is in contact with the oil. Neglect the cord weight and the pulley friction. Assume a linear velocity profile in the oil film.Show full detailed solution please.The units are in mm;1 rpm=0.104719755 rad/sSy=370 MPa