vonne is pulling on the doorknob of her dorm door to keep it closed while Joyce is pulling from the other side to try to get into the room.  The doorknob is 0.7 m from the hinge of the door.  Yvonne is using a force of 75 N exerted at an angle of 75° to the door.  What force does Joyce need to use to open the door if she is exerting force at an 85° angle to the door?  (use methods discussed during th

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Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.